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Fencer Vulns
medium 6.5

CVE-2025-3898 json

CWE-20: Improper Input Validation vulnerability exists that could cause Denial of Service when an authenticated malicious user sends HTTPS…

published 2025-06-10 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-17633

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-175-03 updated cvss 6.5

Schneider Electric Modicon Controllers (Update A)

  • Schneider Electric Modicon Controllers M241 <5.3.12.51
    affected: vendor fix, mitigation se.com
  • Schneider Electric Modicon Controllers M251 <5.3.12.51
    affected: vendor fix, mitigation se.com
  • Schneider Electric Modicon Controllers M262 <5.3.9.18
    affected: vendor fix, mitigation se.com
  • Schneider Electric EcoStruxure Automation Expert - Motion 24.1 Modicon Controllers M241 5.3.12.51, Modicon Controllers M251 5.3.12.51, Modicon Controllers M262 >=5.3.9.18 Schneider Electric EcoStruxure Machine Expert 2.3 Modicon Controllers M241 5.3.12.51, Modicon Controllers M251 5.3.12.51, Modicon Controllers M262 >=5.3.9.18
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
16 mo ago

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA 4.0 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Schneider Electric Modicon Controllers M241/M251
  • Schneider Electric Modicon Controllers M262

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.