NewsCISA Advisories

    Siemens Interniche IP-Stack

    View CSAF Summary Multiple Industrial products are affected by a vulnerability in the Interniche IP-Stack. The affected products do not properly enforce TCP sequence number validation in specific scenarios but accept values within a broad range. This could allow an unauthenticated remote attacker e.g. to interfere with connection setup, potentially leading to a denial of service. The attack succeeds only if an attacker can inject IP packets with spoofed addresses at precisely timed moments, and it affects only TCP-based services. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available. The following versions of Siemens Interniche IP-Stack are affected: SIDOOR ATD430W (CVE-2025-40820) SIDOOR ATE530G COATED (6FB1221-5SM10-7BP0) (CVE-2025-40820) SIDOOR ATE530S COATED (CVE-2025-40820) SIMATIC CFU DIQ (6ES7655-5PX31-1XX0) (CVE-2025-40820) SIMATIC CFU PA (6ES7655-5PX11-0XX0) (CVE-2025-40820) SIMATIC CFU PA (6ES7655-5PX11-1XX0) (CVE-2025-40820) SIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0) (CVE-2025-40820) SIMATIC ET 200clean, CM 8x IO-Link (6ES7148-7JH00-0BB0) (CVE-2025-40820) SIMATIC ET 200clean, DI 16x24VDC (6ES7141-7BH00-0BB0) (CVE-2025-40820) SIMATIC ET 200clean, DIQ 16x24VDC/0,5A (6ES7143-7BH00-0BB0) (CVE-2025-40820) SIMATIC ET 200eco PN, AI 8xRTD/TC, M12-L (6ES7144-6JF00-0BB0) (CVE-2025-40820) SIMATIC ET 200eco PN, CM 4x IO-Link, M12-L (6ES7148-6JE00-0BB0) (CVE-2025-40820) SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L (6ES7148-6JG00-0BB0) (CVE-2025-40820) SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L (6ES7148-6JJ00-0BB0) (CVE-2025-40820) SIMATIC ET 200eco PN, DI 16x24VDC, M12-L (6ES7141-6BH00-0BB0) (CVE-2025-40820) SIMATIC ET 200eco PN, DI 8x24VDC, M12-L (6ES7141-6BG00-0BB0) (CVE-2025-40820) SIMATIC ET 200eco PN, DIQ 16x24VDC/2A, M12-L (6ES7143-6BH00-0BB0) (CVE-2025-40820) SIMATIC ET 200eco PN, DQ 8x24VDC/0,5A, M12-L (6ES7142-6BG00-0BB0) (CVE-2025-40820) SIMATIC ET 200eco PN, DQ 8x24VDC/2A, M12-L (6ES7142-6BR00-0BB0) (CVE-2025-40820) SIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0) (CVE-2025-40820) SIMATIC ET 200pro IM 154-8 PN/DP CPU (6ES7154-8AB01-0AB0) (CVE-2025-40820) SIMATIC ET 200pro IM 154-8F PN/DP CPU (6ES7154-8FB01-0AB0) (CVE-2025-40820) SIMATIC ET 200pro IM 154-8FX PN/DP CPU (6ES7154-8FX00-0AB0) (CVE-2025-40820) SIMATIC ET 200S IM 151-8 PN/DP CPU (6ES7151-8AB01-0AB0) (CVE-2025-40820) SIMATIC ET 200S IM 151-8F PN/DP CPU (6ES7151-8FB01-0AB0) (CVE-2025-40820) SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SJ00-0AB0) (CVE-2025-40820) SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DJ00-0AB0) (CVE-2025-40820) SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SK00-0AB0) (CVE-2025-40820) SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DK00-0AB0) (CVE-2025-40820) SIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0) (CVE-2025-40820) SIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants) (CVE-2025-40820) SIMATIC ET 200SP IM 155-6 PN HF (6ES7155-6AU00-0CN0) (CVE-2025-40820) SIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0) (CVE-2025-40820) SIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0) (CVE-2025-40820) SIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0) (CVE-2025-40820) SIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0) (CVE-2025-40820) SIMATIC Power Line Booster PLB, Base Module (6ES7972-5AA10-0AB0) (CVE-2025-40820) SIMATIC Power Line Booster PLB, Modem Module ST (6ES7972-5AA51-0AB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1211C AC/DC/Rly (6ES7211-1BE40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1211C DC/DC/DC (6ES7211-1AE40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1211C DC/DC/Rly (6ES7211-1HE40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1212C AC/DC/Rly (6ES7212-1BE40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1212C DC/DC/DC (6ES7212-1AE40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1212C DC/DC/Rly (6ES7212-1HE40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1212FC DC/DC/DC (6ES7212-1AF40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1212FC DC/DC/Rly (6ES7212-1HF40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1214C AC/DC/Rly (6ES7214-1BG40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1214C DC/DC/DC (6ES7214-1AG40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1214C DC/DC/Rly (6ES7214-1HG40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1214FC DC/DC/DC (6ES7214-1AF40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1214FC DC/DC/Rly (6ES7214-1HF40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1215C AC/DC/Rly (6ES7215-1BG40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1215C DC/DC/DC (6ES7215-1AG40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1215C DC/DC/Rly (6ES7215-1HG40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1215FC DC/DC/DC (6ES7215-1AF40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1215FC DC/DC/Rly (6ES7215-1HF40-0XB0) (CVE-2025-40820) SIMATIC S7-1200 CPU 1217C DC/DC/DC (6ES7217-1AG40-0XB0) (CVE-2025-40820) SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK00-0AB0) (CVE-2025-40820) SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK00-0AB0) (CVE-2025-40820) SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL00-0AB0) (CVE-2025-40820) SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL00-0AB0) (CVE-2025-40820) SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM00-0AB0) (CVE-2025-40820) SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM00-0AB0) (CVE-2025-40820) SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN00-0AB0) (CVE-2025-40820) SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN00-0AB0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU CR40 (6ES7288-1CR40-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU CR60 (6ES7288-1CR60-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA1) (CVE-2025-40820) SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA1) (CVE-2025-40820) SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA1) (CVE-2025-40820) SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA1) (CVE-2025-40820) SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA1) (CVE-2025-40820) SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA1) (CVE-2025-40820) SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA1) (CVE-2025-40820) SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA0) (CVE-2025-40820) SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA1) (CVE-2025-40820) SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0) (CVE-2025-40820) SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0) (CVE-2025-40820) SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0) (CVE-2025-40820) SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0) (CVE-2025-40820) SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0) (CVE-2025-40820) SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0) (CVE-2025-40820) SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0) (CVE-2025-40820) SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0) (CVE-2025-40820) SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0) (CVE-2025-40820) SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0) (CVE-2025-40820) SIMATIC S7-400 CPU 412-2 PN V7 (6ES7412-2EK07-0AB0) (CVE-2025-40820) SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0) (CVE-2025-40820) SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0) (CVE-2025-40820) SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0) (CVE-2025-40820) SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0) (CVE-2025-40820) SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (CVE-2025-40820) SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (CVE-2025-40820) SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (CVE-2025-40820) SIMATIC TDC CP51M1 (CVE-2025-40820) SIMATIC TDC CPU555 (CVE-2025-40820) SIMOCODE pro V Ethernet/IP (incl. SIPLUS variants) (CVE-2025-40820) SIMOCODE pro V PROFINET (CVE-2025-40820) SINUMERIK 840D sl (CVE-2025-40820) SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0) (CVE-2025-40820) SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0) (CVE-2025-40820) SIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0) (CVE-2025-40820) SIPLUS ET 200S IM 151-8 PN/DP CPU (6AG1151-8AB01-7AB0) (CVE-2025-40820) SIPLUS ET 200S IM 151-8F PN/DP CPU (6AG1151-8FB01-2AB0) (CVE-2025-40820) SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK00-2AB0) (CVE-2025-40820) SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU00-2CN0) (CVE-2025-40820) SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU00-4CN0) (CVE-2025-40820) SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0) (CVE-2025-40820) SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0) (CVE-2025-40820) SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU00-1CN0) (CVE-2025-40820) SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0) (CVE-2025-40820) SIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0) (CVE-2025-40820) SIPLUS HCS4200 CIM4210 (6BK1942-1AA00-0AA0) (CVE-2025-40820) SIPLUS HCS4200 CIM4210C (6BK1942-1AA00-0AA1) (CVE-2025-40820) SIPLUS HCS4300 CIM4310 (6BK1943-1AA00-0AA0) (CVE-2025-40820) SIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-4XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-2XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-4XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1212C AC/DC/RLY (6AG1212-1BE40-2XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-2XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-4XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1212C DC/DC/DC RAIL (6AG2212-1AE40-1XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-5XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-2XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214C AC/DC/RLY (6AG1214-1BG40-2XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214C AC/DC/RLY (6AG1214-1BG40-4XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214C DC/DC/DC (6AG1214-1AG40-2XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214C DC/DC/DC (6AG1214-1AG40-4XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214C DC/DC/DC (6AG1214-1AG40-5XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214C DC/DC/DC RAIL (6AG2214-1AG40-1XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214C DC/DC/RLY (6AG1214-1HG40-4XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214C DC/DC/RLY (6AG1214-1HG40-5XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214FC DC/DC/DC (6AG1214-1AF40-5XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1214FC DC/DC/RLY (6AG1214-1HF40-5XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-4XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-5XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-2XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-4XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-2XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-4XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-5XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215C AC/DC/RLY (6AG1215-1BG40-2XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215C DC/DC/DC (6AG1215-1AG40-5XB0) (CVE-2025-40820) SIPLUS S7-1200 CPU 1215FC DC/DC/DC (6AG1215-1AF40-5XB0) (CVE-2025-40820) SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK00-2AB0) (CVE-2025-40820) SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK00-2AB0) (CVE-2025-40820) SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL00-2AB0) (CVE-2025-40820) SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL00-2AB0) (CVE-2025-40820) SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN00-2AB0) (CVE-2025-40820) SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN00-7AB0) (CVE-2025-40820) SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN00-2AB0) (CVE-2025-40820) SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0) (CVE-2025-40820) SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0) (CVE-2025-40820) SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0) (CVE-2025-40820) SIPLUS S7-300 CPU 317-2 PN/DP (6AG1317-2EK14-7AB0) (CVE-2025-40820) SIPLUS S7-300 CPU 317F-2 PN/DP (6AG1317-2FK14-2AB0) (CVE-2025-40820) SIPLUS S7-400 CPU 414-3 PN/DP V7 (6AG1414-3EM07-7AB0) (CVE-2025-40820) SIPLUS S7-400 CPU 416-3 PN/DP V7 (6AG1416-3ES07-7AB0) (CVE-2025-40820) SIWAREX WP231 (7MH4960-2AA01) (CVE-2025-40820) SIWAREX WP241 (7MH4960-4AA01) (CVE-2025-40820) SIWAREX WP251 (7MH4960-6AA01) (CVE-2025-40820) SIWAREX WP521 ST (7MH4980-1AA01) (CVE-2025-40820) SIWAREX WP522 ST (7MH4980-2AA01) (CVE-2025-40820) CVSS Vendor Equipment Vulnerabilities v3 7.5 Siemens Siemens Interniche IP-Stack Improper Verification of Source of a Communication Channel Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities Expand All + CVE-2025-40820 Affected products do not properly enforce TCP sequence number validation in specific scenarios but accept values within a broad range. This could allow an unauthenticated remote attacker e.g. to interfere with connection setup, potentially leading to a denial of service. The attack succeeds only if an attacker can inject IP packets with spoofed addresses at precisely timed moments, and it affects only TCP-based services. View CVE Details Affected Products Siemens Interniche IP-Stack Vendor: Siemens Product Version: SIDOOR ATD430W, SIDOOR ATE530G COATED (6FB1221-5SM10-7BP0), SIDOOR ATE530S COATED, SIMATIC CFU DIQ (6ES7655-5PX31-1XX0), SIMATIC CFU PA (6ES7655-5PX11-0XX0), SIMATIC CFU PA (6ES7655-5PX11-1XX0), SIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0), SIMATIC ET 200clean, CM 8x IO-Link (6ES7148-7JH00-0BB0), SIMATIC ET 200clean, DI 16x24VDC (6ES7141-7BH00-0BB0), SIMATIC ET 200clean, DIQ 16x24VDC/0,5A (6ES7143-7BH00-0BB0), SIMATIC ET 200eco PN, AI 8xRTD/TC, M12-L (6ES7144-6JF00-0BB0), SIMATIC ET 200eco PN, CM 4x IO-Link, M12-L (6ES7148-6JE00-0BB0), SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L (6ES7148-6JG00-0BB0), SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L (6ES7148-6JJ00-0BB0), SIMATIC ET 200eco PN, DI 16x24VDC, M12-L (6ES7141-6BH00-0BB0), SIMATIC ET 200eco PN, DI 8x24VDC, M12-L (6ES7141-6BG00-0BB0), SIMATIC ET 200eco PN, DIQ 16x24VDC/2A, M12-L (6ES7143-6BH00-0BB0), SIMATIC ET 200eco PN, DQ 8x24VDC/0,5A, M12-L (6ES7142-6BG00-0BB0), SIMATIC ET 200eco PN, DQ 8x24VDC/2A, M12-L (6ES7142-6BR00-0BB0), SIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0), SIMATIC ET 200pro IM 154-8 PN/DP CPU (6ES7154-8AB01-0AB0), SIMATIC ET 200pro IM 154-8F PN/DP CPU (6ES7154-8FB01-0AB0), SIMATIC ET 200pro IM 154-8FX PN/DP CPU (6ES7154-8FX00-0AB0), SIMATIC ET 200S IM 151-8 PN/DP CPU (6ES7151-8AB01-0AB0), SIMATIC ET 200S IM 151-8F PN/DP CPU (6ES7151-8FB01-0AB0), SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SJ00-0AB0), SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DJ00-0AB0), SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SK00-0AB0), SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DK00-0AB0), SIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0), SIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants), SIMATIC ET 200SP IM 155-6 PN HF (6ES7155-6AU00-0CN0), SIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0), SIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0), SIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0), SIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0), SIMATIC Power Line Booster PLB, Base Module (6ES7972-5AA10-0AB0), SIMATIC Power Line Booster PLB, Modem Module ST (6ES7972-5AA51-0AB0), SIMATIC S7-1200 CPU 1211C AC/DC/Rly (6ES7211-1BE40-0XB0), SIMATIC S7-1200 CPU 1211C DC/DC/DC (6ES7211-1AE40-0XB0), SIMATIC S7-1200 CPU 1211C DC/DC/Rly (6ES7211-1HE40-0XB0), SIMATIC S7-1200 CPU 1212C AC/DC/Rly (6ES7212-1BE40-0XB0), SIMATIC S7-1200 CPU 1212C DC/DC/DC (6ES7212-1AE40-0XB0), SIMATIC S7-1200 CPU 1212C DC/DC/Rly (6ES7212-1HE40-0XB0), SIMATIC S7-1200 CPU 1212FC DC/DC/DC (6ES7212-1AF40-0XB0), SIMATIC S7-1200 CPU 1212FC DC/DC/Rly (6ES7212-1HF40-0XB0), SIMATIC S7-1200 CPU 1214C AC/DC/Rly (6ES7214-1BG40-0XB0), SIMATIC S7-1200 CPU 1214C DC/DC/DC (6ES7214-1AG40-0XB0), SIMATIC S7-1200 CPU 1214C DC/DC/Rly (6ES7214-1HG40-0XB0), SIMATIC S7-1200 CPU 1214FC DC/DC/DC (6ES7214-1AF40-0XB0), SIMATIC S7-1200 CPU 1214FC DC/DC/Rly (6ES7214-1HF40-0XB0), SIMATIC S7-1200 CPU 1215C AC/DC/Rly (6ES7215-1BG40-0XB0), SIMATIC S7-1200 CPU 1215C DC/DC/DC (6ES7215-1AG40-0XB0), SIMATIC S7-1200 CPU 1215C DC/DC/Rly (6ES7215-1HG40-0XB0), SIMATIC S7-1200 CPU 1215FC DC/DC/DC (6ES7215-1AF40-0XB0), SIMATIC S7-1200 CPU 1215FC DC/DC/Rly (6ES7215-1HF40-0XB0), SIMATIC S7-1200 CPU 1217C DC/DC/DC (6ES7217-1AG40-0XB0), SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK00-0AB0), SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK00-0AB0), SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL00-0AB0), SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL00-0AB0), SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM00-0AB0), SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM00-0AB0), SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN00-0AB0), SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN00-0AB0), SIMATIC S7-200 SMART CPU CR40 (6ES7288-1CR40-0AA0), SIMATIC S7-200 SMART CPU CR60 (6ES7288-1CR60-0AA0), SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA0), SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA1), SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA0), SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA1), SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA0), SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA1), SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA0), SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA1), SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA0), SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA1), SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA0), SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA1), SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA0), SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA1), SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA0), SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA1), SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0), SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0), SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0), SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0), SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0), SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0), SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0), SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0), SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0), SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0), SIMATIC S7-400 CPU 412-2 PN V7 (6ES7412-2EK07-0AB0), SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0), SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants), SIMATIC TDC CP51M1, SIMATIC TDC CPU555, SIMOCODE pro V Ethernet/IP (incl. SIPLUS variants), SIMOCODE pro V PROFINET, SINUMERIK 840D sl, SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0), SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0), SIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0), SIPLUS ET 200S IM 151-8 PN/DP CPU (6AG1151-8AB01-7AB0), SIPLUS ET 200S IM 151-8F PN/DP CPU (6AG1151-8FB01-2AB0), SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK00-2AB0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU00-2CN0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU00-4CN0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0), SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU00-1CN0), SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0), SIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0), SIPLUS HCS4200 CIM4210 (6BK1942-1AA00-0AA0), SIPLUS HCS4200 CIM4210C (6BK1942-1AA00-0AA1), SIPLUS HCS4300 CIM4310 (6BK1943-1AA00-0AA0), SIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0), SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-4XB0), SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-2XB0), SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-4XB0), SIPLUS S7-1200 CPU 1212C AC/DC/RLY (6AG1212-1BE40-2XB0), SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-2XB0), SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-4XB0), SIPLUS S7-1200 CPU 1212C DC/DC/DC RAIL (6AG2212-1AE40-1XB0), SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-5XB0), SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-2XB0), SIPLUS S7-1200 CPU 1214C AC/DC/RLY (6AG1214-1BG40-2XB0), SIPLUS S7-1200 CPU 1214C AC/DC/RLY (6AG1214-1BG40-4XB0), SIPLUS S7-1200 CPU 1214C DC/DC/DC (6AG1214-1AG40-2XB0), SIPLUS S7-1200 CPU 1214C DC/DC/DC (6AG1214-1AG40-4XB0), SIPLUS S7-1200 CPU 1214C DC/DC/DC (6AG1214-1AG40-5XB0), SIPLUS S7-1200 CPU 1214C DC/DC/DC RAIL (6AG2214-1AG40-1XB0), SIPLUS S7-1200 CPU 1214C DC/DC/RLY (6AG1214-1HG40-4XB0), SIPLUS S7-1200 CPU 1214C DC/DC/RLY (6AG1214-1HG40-5XB0), SIPLUS S7-1200 CPU 1214FC DC/DC/DC (6AG1214-1AF40-5XB0), SIPLUS S7-1200 CPU 1214FC DC/DC/RLY (6AG1214-1HF40-5XB0), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-4XB0), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-5XB0), SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-2XB0), SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-4XB0), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-2XB0), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-4XB0), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-5XB0), SIPLUS S7-1200 CPU 1215C AC/DC/RLY (6AG1215-1BG40-2XB0), SIPLUS S7-1200 CPU 1215C DC/DC/DC (6AG1215-1AG40-5XB0), SIPLUS S7-1200 CPU 1215FC DC/DC/DC (6AG1215-1AF40-5XB0), SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK00-2AB0), SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK00-2AB0), SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL00-2AB0), SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL00-2AB0), SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN00-2AB0), SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN00-7AB0), SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN00-2AB0), SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0), SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0), SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0), SIPLUS S7-300 CPU 317-2 PN/DP (6AG1317-2EK14-7AB0), SIPLUS S7-300 CPU 317F-2 PN/DP (6AG1317-2FK14-2AB0), SIPLUS S7-400 CPU 414-3 PN/DP V7 (6AG1414-3EM07-7AB0), SIPLUS S7-400 CPU 416-3 PN/DP V7 (6AG1416-3ES07-7AB0), SIWAREX WP231 (7MH4960-2AA01), SIWAREX WP241 (7MH4960-4AA01), SIWAREX WP251 (7MH4960-6AA01), SIWAREX WP521 ST (7MH4980-1AA01), SIWAREX WP522 ST (7MH4980-2AA01) Product Status: known_affected Remediations Mitigation As a mitigation, disable the ethernet ports on the CPU and use a communication module (like CP) for communication instead No fix planned Currently no fix is planned None available Currently no fix is available Vendor fix Update to V1.3 or later version Vendor fix Update to V10.2 or later version Vendor fix Update to V2.0.0 or later version Vendor fix Update to V2.0.0 or later version Vendor fix Update to V4.4.0 or later version Vendor fix Update to V6.0.0 or later version Vendor fix Update to V8.3 or later version Workaround Limit TCP accessibility to trusted IP address Relevant CWE: CWE-940 Improper Verification of Source of a Communication Channel Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Acknowledgments Siemens ProductCERT reported this vulnerability to CISA. Qian Zou, Xuewei Feng, Ke Xu, Qi Li, Xueying Li, and Gang Jin of Zhongguancun Laboratory reported this vulnerability to Siemens Qian Zou, Xuewei Feng, Ke Xu, Qi Li, Xueying Li, and Gang Jin of Tsinghua University reported this vulnerability to Siemens General Recommendations As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity Additional Resources For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories Terms of Use The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use. Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the exploitation risk of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. Advisory Conversion Disclaimer This ICSA is a verbatim republication of Siemens ProductCERT SSA-915282 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Siemens ProductCERT directly for any questions regarding this advisory. Revision History Initial Release Date: 2025-12-18 Date Revision Summary 2025-12-18 1 Initial Republication Legal Notice and Terms of Use

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    Source: https://www.cisa.gov/news-events/ics-advisories/icsa-25-352-05

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