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Fencer Vulns
medium 5.4

CVE-2025-27472 json

Windows Mark of the Web Security Feature Bypass Vulnerability

published 2025-04-08 19 mo ago modified 2026-08-10 2 mo ago also EUVD-2025-10181

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

Protection mechanism failure in Windows Mark of the Web (MOTW) allows an unauthorized attacker to bypass a security feature over a network.

Patch / fix

  • Microsoft Windows 10 Version 1507 10.0.10240.20978
  • Microsoft Windows Server 2012 6.2.9200.25423
  • Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.25423
  • Microsoft Windows Server 2012 R2 6.3.9600.22523
  • Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.22523

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

1.54% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Affected products

  • Microsoft Windows 10 Version 1507
  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2012 (Server Core installation)
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2012 R2 (Server Core installation)

Classification

Weakness
  • CWE-693 Protection Mechanism Failure

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.