CVE-2022-37958
HighSPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability
Published Sep 13, 2022 · Updated Mar 11, 2025
Key Facts
Patch immediately- CVE-2022-37958 is a high-severity vulnerability (CVSS 8.1 v3.1) affecting Windows 10 (Microsoft), Windows 11 (Microsoft), Windows 7 (Microsoft) and 21 more products.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 86% probability of exploitation in the next 30 days.
- Fixed versions are available, including Windows 10 Version 1507 10.0.10240.19444, Windows 10 Version 1607 10.0.14393.5356, Windows 10 Version 1809 10.0.17763.3406.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
86%
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-2022-37958 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability
Affected Products
51 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10Microsoft | 1607, 1809, 20h2, 21h1, 21h2 | n/a |
| Windows 11Microsoft | See advisory | n/a |
| Windows 7Microsoft | >= 6.1.0 | 6.1.7601.26115 |
| Windows 8.1Microsoft | >= 6.3.0 | 6.3.9600.20571 |
| Windows Server 2008Microsoft | r2-sp1 | n/a |
Patched Releases
Windows 10 Version 1507
10.0.10240.19444
Windows 10 Version 1607
10.0.14393.5356
Windows 10 Version 1809
10.0.17763.3406
Windows 10 Version 20H2
10.0.19042.2006
Windows 10 Version 21H1
10.0.19043.2006
Windows 10 Version 21H2
10.0.19044.2006
Windows 11 version 21H2
10.0.22000.978
Windows 7
6.1.7601.26115
Windows 7 Service Pack 1
6.1.7601.26115
Windows 8.1
6.3.9600.20571
Windows Server 2008 R2 Service Pack 1
6.1.7601.26115
Windows Server 2008 R2 Service Pack 1 (Server Core installation)
6.1.7601.26115
Windows Server 2012
6.2.9200.23865
Windows Server 2012 (Server Core installation)
6.2.9200.23865
Windows Server 2012 R2
6.3.9600.20571
Windows Server 2012 R2 (Server Core installation)
6.3.9600.20571
Windows Server 2016
10.0.14393.5356
Windows Server 2016 (Server Core installation)
10.0.14393.5356
Windows Server 2019
10.0.17763.3406
Windows Server 2019 (Server Core installation)
10.0.17763.3406
Windows Server 2022
10.0.20348.1006
Timeline
Publicly disclosed
Sep 13, 2022
Last updated
Mar 11, 2025
References
FAQ
Common Questions.
SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability
Affected: Windows 10 (Microsoft) versions 1607, 1809, 20h2, 21h1, 21h2; Windows 11 (Microsoft); Windows 7 (Microsoft) versions >= 6.1.0, 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 10.0.10240.19444, Windows 10 Version 1607 10.0.14393.5356, Windows 10 Version 1809 10.0.17763.3406.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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