What is CVE-2025-3898?

CVE-2025-3898 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-2025-3898?

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

Improper input validation in Schneider Electric Modicon Controllers M241/m251

CVE-2025-3898

CWE-20: Improper Input Validation vulnerability exists that could cause Denial of Service when an authenticated malicious user sends HTTPS request containing invalid data type to the webserver.

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

EPSS: 0.004 (35.3th 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 M262 — versions Versions prior to 5.3.9.18

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

cybersecurity@se.com

Frequently asked questions

What is CVE-2025-3898?: CVE-2025-3898 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-2025-3898?: Medium severity. CVSS v3 base score is 6.5 out of 10.