Intel

CVE-2026-20232

Industrial Ethernet Switches: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) (CVE-2026-20232)

mediumEPSS 0.3%

Affected

  • Cisco/Industrial Ethernet Switches range_unparsed *..1000 Series <1.9.6

Description

A vulnerability in the web-based management interface of Cisco Industrial Ethernet (IE) 1000 Series Switches could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of another user. To exploit this vulnerability, the attacker must have valid user credentials on the affected system.

Source: BSI CSAFBSI WID Portalcvelistv5NVD (NIST)cisco_csaf

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

CiscoIndustrial Ethernet Switches
1000 Series <1.9.6

Metrics

XIEM Effective CVSS
5.4
Source: nvd-v3
EPSS percentile
17.5 %
Elevated — this CVE ranks above at least 10% of all CVEs scored today.
KEV status
—
Show all metrics
Severity
medium
Priority score
55.52
Exploit maturity
no public PoC known
CVSS v3
5.4
EPSS score
0.3 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-08-19 16:16 UTC
CWE
CWE-80

Weakness classes (CWE)

  • CWE-80Variant

    Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

    The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. CVE Modified2026-08-19 20:17 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-20232","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalI…
  2. New CVE Received2026-08-19 17:18 UTC· psirt@cisco.com
    • Affected: Cisco Industrial Ethernet Switches
    • Description: A vulnerability in the web-based management interface of Cisco Industrial Ethernet (IE) 1000 Series Switches could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of another user. To exploit this vulnerability, the attacker must have valid user credentials on the affected system.
    • CVSS V3.1: AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    • CWE: CWE-80

Linked advisories