CVE-2023-21758
HighWindows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability
Published Jan 10, 2023 · Updated Jan 1, 2025
Key Facts
Patch immediately- CVE-2023-21758 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Windows 10 (Microsoft), Windows 11 (Microsoft), Windows Server 2016 (Microsoft) and 12 more products.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 93% 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)
93%
Higher than 99.8% 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-2023-21758 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability
Affected Products
28 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10Microsoft | 1607, 1809, 20h2, 21h2, 22h2 | n/a |
| Windows 11Microsoft | 21h2, 22h2 | n/a |
| Windows Server 2016Microsoft | >= 10.0.14393.0 | 10.0.14393.5648 |
| Windows Server 2019Microsoft | >= 10.0.17763.0 | 10.0.17763.3887 |
| Windows Server 2022Microsoft | >= 10.0.20348.0 | 10.0.20348.1487 |
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-476 NULL Pointer Dereference
References
FAQ
Common Questions.
Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability
Affected: Windows 10 (Microsoft) versions 1607, 1809, 20h2, 21h2, 22h2; Windows 11 (Microsoft) versions 21h2, 22h2; Windows Server 2016 (Microsoft) versions >= 10.0.14393.0, 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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