Siemens SIDOOR ATD430W: Uncontrolled Resource Consumption (CVE-2024-23814)
Published Sources: Siemens ProductCERT, CVE.org
What is affected, what to do
The integrated ICMP service of the network stack of affected devices can be forced to exhaust its available memory resources when receiving specially crafted messages targeting IP fragment re-assembly. This could allow an unauthenticated remote attacker to cause a temporary denial of service condition of the ICMP service, other communication services are not affected.
The available sources name no fixed version. Check the vendor guidance in the references below.
Not sure whether and how you are affected? Ask a question about this vulnerability
Metrics
6.9
Priority
XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.
Source: Vendor (CNA), CVSS v4
5.3
CVSS v3
Severity Medium on the scale from 0 to 10.
Source: Siemens ProductCERT, CVE.org
0.6 %
EPSS score
Low — model estimates < 1% exploitation likelihood.
Source: FIRST EPSS, percentile 49.7
Show all metrics
- Severity
- Medium
Priority (0–325)
The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?
Read in glossary- 62.08 Methodology
Exploit maturity
An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.
Read in glossary- no public PoC known
XIEM Effective CVSS
XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.
Read in glossary- 6.9 Methodology
CVSS v3
CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.
Read in glossary- 5.3
CVSS v4
CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.
Read in glossary- 6.9
EPSS score
The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.
Read in glossary- 0.6 %
- Low — model estimates < 1% exploitation likelihood.
EPSS percentile
The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.
Read in glossary- 49.7
- High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.
Read in glossary- —
- Published
- CISA assessment (SSVC)
- Exploitation: none known · automatable · Technical impact: partial
- Source: CISA Vulnrichment, as of 11 February 2025
CWE
CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.
Read in glossary- CWE-400
Detection rules
No NEOSEC detection rule is available for this vulnerability yet.
Classification under NIS2 and CRA
Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.
NIS2
NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.
Read in glossary- Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
CRA
The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.
Read in glossary- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001
ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.
Read in glossary- Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.
Description
The integrated ICMP service of the network stack of affected devices can be forced to exhaust its available memory resources when receiving specially crafted messages targeting IP fragment re-assembly. This could allow an unauthenticated remote attacker to cause a temporary denial of service condition of the ICMP service, other communication services are not affected. Affected devices will resume normal operation after the attack terminates.
Source: siemens_advisory, NVD (NIST), cvelistv5
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| Siemens | SIDOOR ATD430W |
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| Siemens | SIDOOR ATE530G COATED |
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| Siemens | SIDOOR ATE530S COATED |
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| Siemens | SIMATIC CFU DIQ |
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| Siemens | SIMATIC CFU PA |
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| Siemens | SIMATIC ET 200AL IM 157-1 PN |
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| Siemens | SIMATIC ET 200M IM 153-4 PN IO HF |
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| Siemens | SIMATIC ET 200M IM 153-4 PN IO ST |
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| Siemens | SIMATIC ET 200MP IM 155-5 PN BA |
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| Siemens | SIMATIC ET 200MP IM 155-5 PN HF |
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| Siemens | SIMATIC ET 200MP IM 155-5 PN ST |
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| Siemens | SIMATIC ET 200pro IM 154-3 PN HF |
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| Siemens | SIMATIC ET 200pro IM 154-4 PN HF |
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| Siemens | SIMATIC ET 200pro IM 154-8 PN/DP CPU |
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| Siemens | SIMATIC ET 200pro IM 154-8F PN/DP CPU |
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| Siemens | SIMATIC ET 200pro IM 154-8FX PN/DP CPU |
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| Siemens | SIMATIC ET 200S IM 151-3 PN FO |
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| Siemens | SIMATIC ET 200S IM 151-3 PN HF |
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| Siemens | SIMATIC ET 200S IM 151-3 PN HS |
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| Siemens | SIMATIC ET 200S IM 151-3 PN ST |
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| Siemens | SIMATIC ET 200S IM 151-8 PN/DP CPU |
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| Siemens | SIMATIC ET 200S IM 151-8F PN/DP CPU |
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| Siemens | SIMATIC ET 200SP CPU 1510SP F-1 PN |
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| Siemens | SIMATIC ET 200SP CPU 1510SP-1 PN |
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| Siemens | SIMATIC ET 200SP CPU 1512SP F-1 PN |
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| Siemens | SIMATIC ET 200SP CPU 1512SP-1 PN |
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| Siemens | SIMATIC ET 200SP IM 155-6 MF HF |
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| Siemens | SIMATIC ET 200SP IM 155-6 PN BA |
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| Siemens | SIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants) |
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| Siemens | SIMATIC ET 200SP IM 155-6 PN HF |
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| Siemens | SIMATIC ET 200SP IM 155-6 PN HS |
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| Siemens | SIMATIC ET 200SP IM 155-6 PN ST |
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| Siemens | SIMATIC ET 200SP IM 155-6 PN ST BA |
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| Siemens | SIMATIC ET 200SP IM 155-6 PN/2 HF |
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| Siemens | SIMATIC ET 200SP IM 155-6 PN/3 HF |
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| Siemens | SIMATIC PN/PN Coupler |
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| Siemens | SIMATIC Power Line Booster PLB, Base Module |
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| Siemens | SIMATIC Power Line Booster PLB, Modem Module ST |
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| Siemens | SIMATIC S7-1200 CPU 1211C AC/DC/Rly |
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| Siemens | SIMATIC S7-1200 CPU 1211C DC/DC/DC |
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| Siemens | SIMATIC S7-1200 CPU 1211C DC/DC/Rly |
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| Siemens | SIMATIC S7-1200 CPU 1212C AC/DC/Rly |
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| Siemens | SIMATIC S7-1200 CPU 1212C DC/DC/DC |
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| Siemens | SIMATIC S7-1200 CPU 1212C DC/DC/Rly |
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| Siemens | SIMATIC S7-1200 CPU 1212FC DC/DC/DC |
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| Siemens | SIMATIC S7-1200 CPU 1212FC DC/DC/Rly |
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| Siemens | SIMATIC S7-1200 CPU 1214C AC/DC/Rly |
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| Siemens | SIMATIC S7-1200 CPU 1214C DC/DC/DC |
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Vendors and products
- Siemens Sidoor Atd430w
- Siemens Sidoor Ate530s Coated
- Siemens Simatic Cfu Diq
- Siemens Simatic Cfu Pa
- Siemens Simatic Et 200al Im 157-1 Pn
- Siemens Simatic Et 200mp Im 155-5 Pn Ba
- Siemens Simatic Et 200mp Im 155-5 Pn Hf
- Siemens Simatic Et 200mp Im 155-5 Pn St
- Siemens Simatic Et 200pro Im 154-3 Pn Hf
- Siemens Simatic Et 200pro Im 154-4 Pn Hf
- Siemens Simatic Et 200pro Im 154-8f Pn/dp CPU
- Siemens Simatic Et 200pro Im 154-8fx Pn/dp CPU
Weakness classes (CWE)
CWE-400Uncontrolled Resource Consumption
Class
The product does not properly control the allocation and maintenance of a limited resource.
Entry at MITRE CWE-400
References & sources
- Siemens ProductCERTproductcert/html/ssa-769027.html
- Siemens ProductCERTproductcert/html/ssa-725549.html
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<a href="https://intel.neosec.eu/en/cve/CVE-2024-23814"><img src="https://intel.neosec.eu/badge/cve/CVE-2024-23814.svg?lang=en" alt="CVE-2024-23814 – NEOSEC Intel" height="20"></a>