Improper input validation in Schneider Electric Modicon Controllers M241/M251
Priority LOW 32CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00554 46th percentileScored 2026-11-07
Fix Fixed Modicon Controllers M241/M251 (Schneider Electric): 5.3.12.51Modicon Controllers M262 (Schneider Electric): 5.3.9.18
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Schneider Electric | Modicon Controllers M241/M251 | before 5.3.12.51 | 5.3.12.51 | Patch available | CNA |
| Schneider Electric | Modicon Controllers M262 | before 5.3.9.18 | 5.3.9.18 | Patch available | CNA |
- Modicon Controllers M241/M251 VendorSchneider Electric Affected before 5.3.12.51 Fixed in 5.3.12.51 Patch available CNA
- Modicon Controllers M262 VendorSchneider Electric Affected before 5.3.9.18 Fixed in 5.3.9.18 Patch available CNA
Remediation
- Fix · CNA Modicon Controllers M241/M251 (Schneider Electric) Fixed in 5.3.12.51
- Fix · CNA Modicon Controllers M262 (Schneider Electric) Fixed in 5.3.9.18
Timeline
- 2026-10-02 Threatist record created from CVE-2025-3898
- 2026-10-03 Alias added: GHSA-hxx3-p6px-cf6j
References
More Schneider Electric vulnerabilities
- TI-2018-05679 SQL injection in U.motion Builder software version 1.3.4 KEVCVSS 3.1CRITICAL 9.8
- TI-2021-05589 Hard-coded credentials in EVlink City , EVlink Parking , and EVlink Smart Wallbox CVSS 3.1CRITICAL 9.8
- TI-2022-15561 OS command injection in Schneider Electric SpaceLogic C-Bus Home Controller CVSS 3.1HIGH 8.8
- TI-2023-04970 Path traversal in Schneider Electric C-Bus Toolkit CVSS 3.1CRITICAL 9.8
- TI-2019-04862 Improper handling of exceptional conditions in Schneider Electric Modicon M580 CVSS 3.1HIGH 7.5
- TI-2018-05690 Improper handling of exceptional conditions in Modicon M580 Modicon M340 Modicon Quantum… CVSS 3.1HIGH 7.5
Sources
- CVE-2025-3898 · CVE Program
- CVE-2025-3898 · NVD
- FIRST EPSS
- GHSA-hxx3-p6px-cf6j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences