CVE-2022-21971 kev in the critical feed json
Windows Runtime Remote Code Execution Vulnerability
published 2022-02-09 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-27126
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-08-18
- epss
- 53.9%
- EPSS 53.9% chance of exploitation in 30 days, percentile 99%
- public exploits
- 0
- none known
Summary
Windows Runtime Remote Code Execution Vulnerability
Patch / fix
cisa required action Apply updates per vendor instructions.
- Microsoft Windows 10 Version 1809 10.0.17763.2565
- Microsoft Windows Server 2019 10.0.17763.2565
- Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.2565
- Microsoft Windows 10 Version 1909 10.0.18363.2094
- Microsoft Windows 10 Version 21H1 10.0.19043.1526
- Microsoft Windows Server 2022 10.0.20348.524
- Microsoft Windows 10 Version 20H2 10.0.19042.1526
- Microsoft Windows Server version 20H2 10.0.19042.1526
- Microsoft Windows 11 version 21H2 10.0.22000.493
- Microsoft Windows 10 Version 21H2 10.0.19044.1526
Timeline
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-09-08 (4 y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Microsoft, Windows
- CISA name
- Microsoft Windows Runtime Remote Code Execution Vulnerability
ATT&CK techniques
How it is exploited and what it leads to, in MITRE ATT&CK terms.
kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
53.93% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Microsoft Windows 10 Version 1809
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows 10 Version 1909
- Microsoft Windows 10 Version 21H1
- Microsoft Windows Server 2022
- Microsoft Windows 10 Version 20H2
- Microsoft Windows Server version 20H2
- Microsoft Windows 11 version 21H2
- Microsoft Windows 10 Version 21H2
Classification
- Weakness
-
- CWE-824 Access of Uninitialized Pointer
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2022-21971
vendor-advisory, patch
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21971
government-resource, us-government-resource
Sources
- CVE List CVE-2022-21971
- NVD CVE-2022-21971
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.