CVE-2023-21547
HighInternet Key Exchange (IKE) Protocol Denial of Service Vulnerability
Published Jan 10, 2023 · Updated Jan 1, 2025
Key Facts
Patch immediately- CVE-2023-21547 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Windows 10 1607 (Microsoft), Windows 10 1809 (Microsoft), Windows 10 21h2 (Microsoft) and 16 more products.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 89% probability of exploitation in the next 30 days.
- Fixed versions are available, including Windows 10 Version 1507 10.0.10240.19685, Windows 10 Version 1607 10.0.14393.5648, Windows 10 Version 1809 10.0.17763.3887.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (30-day exploit likelihood)
89%
Higher than 99.7% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2023-21547 brief as a PDF
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Description
Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability
Affected Products
31 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 1607Microsoft | See advisory | n/a |
| Windows 10 1809Microsoft | See advisory | n/a |
| Windows 10 21h2Microsoft | See advisory | n/a |
| Windows 10 22h2Microsoft | See advisory | n/a |
| Windows 11 21h2Microsoft | See advisory | n/a |
Patched Releases
Windows 10 Version 1507
10.0.10240.19685
Windows 10 Version 1607
10.0.14393.5648
Windows 10 Version 1809
10.0.17763.3887
Windows 10 Version 20H2
10.0.19042.2486
Windows 10 Version 21H2
10.0.19044.2486
Windows 10 Version 22H2
10.0.19045.2486
Windows 11 version 21H2
10.0.22000.1455
Windows 11 version 22H2
10.0.22621.1105
Windows Server 2016
10.0.14393.5648
Windows Server 2016 (Server Core installation)
10.0.14393.5648
Windows Server 2019
10.0.17763.3887
Windows Server 2019 (Server Core installation)
10.0.17763.3887
Windows Server 2022
10.0.20348.1487
Timeline
Publicly disclosed
Jan 10, 2023
Last updated
Jan 1, 2025
Weakness Type
- CWE-400 Uncontrolled Resource Consumption
- CWE-476 NULL Pointer Dereference
References
FAQ
Common Questions.
Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability
Affected: Windows 10 1607 (Microsoft); Windows 10 1809 (Microsoft); Windows 10 21h2 (Microsoft), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Windows 10 Version 1507 10.0.10240.19685, Windows 10 Version 1607 10.0.14393.5648, Windows 10 Version 1809 10.0.17763.3887.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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