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Fencer Vulns
high 7.5

CVE-2023-21547 in the critical feed json

Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability

published 2023-01-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-25714

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
89.3%
EPSS 89.3% chance of exploitation in 30 days, percentile 99.7%
public exploits
0
none known

Summary

Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability

Patch / fix

  • Microsoft Windows 10 Version 1809 10.0.17763.3887
  • Microsoft Windows Server 2019 10.0.17763.3887
  • Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.3887
  • Microsoft Windows Server 2022 10.0.20348.1487
  • Microsoft Windows 10 Version 20H2 10.0.19042.2486
  • Microsoft Windows 11 version 21H2 10.0.22000.1455
  • Microsoft Windows 10 Version 21H2 10.0.19044.2486
  • Microsoft Windows 11 version 22H2 10.0.22621.1105
  • Microsoft Windows 10 Version 22H2 10.0.19045.2486
  • Microsoft Windows 10 Version 1507 10.0.10240.19685
  • Microsoft Windows 10 Version 1607 10.0.14393.5648
  • Microsoft Windows Server 2016 10.0.14393.5648
  • Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.5648

Exploit prediction

89.28% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Microsoft Windows 10 Version 1809
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2019 (Server Core installation)
  • Microsoft Windows Server 2022
  • Microsoft Windows 10 Version 20H2
  • Microsoft Windows 11 version 21H2
  • Microsoft Windows 10 Version 21H2
  • Microsoft Windows 11 version 22H2
  • Microsoft Windows 10 Version 22H2
  • Microsoft Windows 10 Version 1507
  • Microsoft Windows 10 Version 1607
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2016 (Server Core installation)

Classification

Weakness
  • CWE-476 NULL Pointer Dereference
  • CWE-400 Uncontrolled Resource Consumption

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.