CVE-2025-13902

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-10 · updated 2026-06-23
Weakness: CWE-79

Description

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability exists that could cause condition where authenticated attackers can have a victim’s browser run arbitrary JavaScript when the victim hovers over a maliciously crafted element on a web server containing the injected payload.

Affected products

Schneider-Electric Modicon Lmc058 Firmware: all versions
Schneider-Electric Modicon M241 Firmware: before 5.4.13.12 — fixed in 5.4.13.12
Schneider-Electric Modicon M251 Firmware: before 5.4.13.12 — fixed in 5.4.13.12
Schneider-Electric Modicon M258 Firmware: all versions

How to fix

Upgrade to a fixed version: Schneider-Electric Modicon M241 Firmware 5.4.13.12; Schneider-Electric Modicon M251 Firmware 5.4.13.12. Check the vendor advisory for mitigations.

References

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-069-02&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-069-02.pdf

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