CVE-2022-26820 json
Windows DNS Server Remote Code Execution Vulnerability
published 2022-04-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-31370
- cvss
- 6.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
Windows DNS Server Remote Code Execution Vulnerability
Patch / fix
- Microsoft Windows Server 2019 10.0.17763.2803
- Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.2803
- Microsoft Windows Server 2022 10.0.20348.643
- Microsoft Windows Server version 20H2 10.0.19042.1645
- Microsoft Windows Server 2016 10.0.14393.5066
- Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.5066
- Microsoft Windows Server 2008 Service Pack 2 6.0.6003.21446
- Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.21446
- Microsoft Windows Server 2008 Service Pack 2 6.0.6003.21446
- Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.25924
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.25924
- Microsoft Windows Server 2012 6.2.9200.23679
- Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.23679
- Microsoft Windows Server 2012 R2 6.3.9600.20337
- Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.20337
Exploit prediction
1.93% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 6.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 8.5 | AV:N/AC:M/Au:S/C:C/I:C/A:C |
Affected products
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows Server 2022
- Microsoft Windows Server version 20H2
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core installation)
- Microsoft Windows Server 2008 Service Pack 2
- Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
- Microsoft Windows Server 2008 Service Pack 2
- Microsoft Windows Server 2008 R2 Service Pack 1
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- 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-362 Concurrent Execution using Shared Resource with Improper Synchronization
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2022-26820
vendor-advisory
Sources
- CVE List CVE-2022-26820
- NVD CVE-2022-26820
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.