What is CVE-2025-3116?

CVE-2025-3116 is a medium-severity vulnerability in Schneider Electric Modicon Controllers M241/m251, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2025-06-10.

How severe is CVE-2025-3116?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Schneider Electric Modicon Controllers M241/m251

CVE-2025-3116

CWE-20: Improper Input Validation vulnerability exists that could cause Denial of Service when an authenticated malicious user sends special malformed HTTPS request containing improper formatted body data to the controller.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.004 (30.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Schneider Electric Modicon Controllers M241/m251 — versions Versions prior to 5.3.12.51
Schneider Electric Modicon Controllers M258 / Lmc058 — versions All Versions

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

cybersecurity@se.com

Frequently asked questions

What is CVE-2025-3116?: CVE-2025-3116 is a medium-severity vulnerability in Schneider Electric Modicon Controllers M241/m251, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2025-06-10.
How severe is CVE-2025-3116?: Medium severity. CVSS v3 base score is 6.5 out of 10.