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CVE

CVE-2022-21971

Microsoft Windows Runtime Remote Code Execution Vulnerability

Windows Runtime Remote Code Execution Vulnerability.

HIGH · CVSS 7.8 ⚠ CISA KEV EPSS 0.87787
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions.

⬡

Weakness Classification

CWE-824Access of Uninitialized Pointer
CWE-824Access of Uninitialized Pointer
▤

Affected Products & Versions

9
microsoft windows 10 1809< 10.0.17763.2565
microsoft windows 10 1909< 10.0.18363.2094
microsoft windows 10 20h2< 10.0.19042.1526
microsoft windows 10 21h1< 10.0.19043.1526
microsoft windows 10 21h2< 10.0.19044.1526
microsoft windows 11 21h2< 10.0.22000.493
microsoft windows server 2019< 10.0.17763.2565
microsoft windows server 2022< 10.0.20348.524
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Feb 2022 · 05:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

2
cisaKEV-CVE-2022-21971
msrcCVE-2022-21971Remote Code Execution
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21971US Government Resource
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