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Fencer Vulns
high 7.1

CVE-2024-20688 json

Secure Boot Security Feature Bypass Vulnerability

published 2024-04-09 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-18403

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits
0
none known

Summary

Secure Boot Security Feature Bypass Vulnerability

Patch / fix

  • Microsoft Windows Server 2012 6.2.9200.24821
  • Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.24821
  • Microsoft Windows Server 2012 R2 6.3.9600.21924
  • Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.21924

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

1.27% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 7.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • 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-121 Stack-based Buffer Overflow

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.