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Fencer Vulns
medium 6.2

CVE-2025-55334 json

Windows Kernel Security Feature Bypass Vulnerability

published 2025-10-14 12 mo ago modified 2026-10-18 21 d ago also EUVD-2025-34340

cvss
6.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits
0
none known

Summary

Cleartext storage of sensitive information in Windows Kernel allows an unauthorized attacker to bypass a security feature locally.

Patch / fix

  • Microsoft Windows 11 version 22H2 10.0.22621.6060
  • Microsoft Windows 11 version 22H3 10.0.22631.6060
  • Microsoft Windows 11 Version 23H2 10.0.22631.6060
  • Microsoft Windows 11 Version 24H2 10.0.26100.6899
  • Microsoft Windows 11 Version 25H2 10.0.26200.6899

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
12 mo ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
CNA 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Microsoft Windows 11 version 22H2
  • Microsoft Windows 11 version 22H3
  • Microsoft Windows 11 Version 23H2
  • Microsoft Windows 11 Version 24H2
  • Microsoft Windows 11 Version 25H2

Classification

Weakness
  • CWE-312 Cleartext Storage of Sensitive Information

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.