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Fencer Intel
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 last yr. modified 4mo 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.

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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
last yr.

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-09).

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 Intel 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.