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Vulnerabilities

Security incident · CVE-2025-3905

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability exists impacting PLC system variables that could cause an unvalidated dat

Published Jun 10, 2025 · catalog updated Jun 10, 2025 · Schneider Electric Modicon Controllers M241/M251

Check if you run it

No confirmed exploitation is on record for CVE-2025-3905. EPSS is 0.30%. Act only if a listed version of Schneider Electric Modicon Controllers M241/M251 is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.30%
Remediation
Advisory link
Affected products
vendor Schneider Electric Modicon Controllers M241/M251 Versions prior to 5.3.12.51

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability exists impacting PLC system variables that could cause an unvalidated data injected by authenticated malicious user leading to modify or read data in a victim’s browser.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Schneider Electric Modicon Controllers M241/M251 Versions prior to 5.3.12.51Versions prior to 5.3.12.51

How to fix CVE-2025-3905

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-3905. EPSS is 0.30%. Act only if a listed version of Schneider Electric Modicon Controllers M241/M251 is installed.

Which versions are affected?

Compare what you have installed with Schneider Electric Modicon Controllers M241/M251 Versions prior to 5.3.12.51 Versions prior to 5.3.12.51. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.30%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 10, 2025 · EUVD

    Detected

    CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability exists impacting PLC system variables that could cause an unvalidated data injected by authenticated malicious user leading to modify or read data in a victim’s browser.

  2. Jun 10, 2025 · EUVD

    Updated

    CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability exists impacting PLC system variables that could cause an unvalidated data injected by authenticated malicious user leading to modify or read data in a victim’s browser.

Sources

  • CVE.orgVulnerability recordCVE-2025-3905

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-3905

    30-day exploitation probability 0.3%

    first.org
  • EUVDVulnerability recordEUVD-2025-17646

    CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability exists impacting PLC system variables that could cause an unvalidated data injected by authenticated malicious user leading to modify or read data in a victim’s browser.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.