CVE-2022-21971

HIGHNVD 7.89.0▲Trending — 5 sources updated this weekExploited in the wild

7.8

Windows Runtime Remote Code Execution Vulnerability

CVSS v3: 7.8
EG Score: 9.0(high)
EPSS: 99.5%
KEV: ⚠ Exploited

Published

February 9, 2022

Last Modified

October 30, 2025

Advisory Details (2)

Auto-updated Jun 3, 2026

⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, cisa.

cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21971

microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21971

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-824Access of Uninitialized Pointer

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2022-219712022-02-08
Windows Runtime Remote Code Execution Vulnerability

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-03 20:41 UTCEG score recompute
2026-06-03 20:41 UTCVendor advisory
2026-06-03 20:41 UTCGHSA enrichment
2026-06-03 19:09 UTCkev_newly_listed
2026-06-03 16:23 UTCEG score recompute
2026-06-03 16:23 UTCVendor advisory
2026-06-03 16:23 UTCGHSA enrichment
2026-06-03 12:05 UTCEG score recompute
2026-06-03 12:05 UTCVendor advisory
2026-06-03 12:05 UTCGHSA enrichment
2026-06-03 07:47 UTCEG score recompute
2026-06-03 07:47 UTCVendor advisory
2026-06-03 07:47 UTCGHSA enrichment
2026-06-03 03:29 UTCEG score recompute
2026-06-03 03:29 UTCVendor advisory
2026-06-03 03:29 UTCGHSA enrichment
2026-06-02 23:11 UTCEG score recompute
2026-06-02 23:11 UTCVendor advisory
2026-06-02 23:11 UTCGHSA enrichment
2026-06-02 20:11 UTCepss_batch

Publicly available exploits

(3 references)

Working exploit code is in the public domain (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCMalwareman007/CVE-2022-21971
First seen Oct 7, 2022
POC Of CVE-2022-21971
Open source ↗
GitHub PoCtufanturhan/CVE-2022-21971-Windows-Runtime-RCE
First seen Apr 15, 2022
Open source ↗
GitHub PoC0vercl0k/CVE-2022-21971
First seen Feb 26, 2022
PoC for CVE-2022-21971 "Windows Runtime Remote Code Execution Vulnerability"
Open source ↗

Frequently asked(6)

What is CVE-2022-21971?

CVE-2022-21971 is a high vulnerability published on February 9, 2022. Windows Runtime Remote Code Execution Vulnerability

When was CVE-2022-21971 disclosed?

CVE-2022-21971 was first published in the National Vulnerability Database on February 9, 2022, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-21971 actively exploited?

Yes. CISA added CVE-2022-21971 to the Known Exploited Vulnerabilities catalog on August 18, 2022, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2022-21971?

CVE-2022-21971 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2022-21971?

CVE-2022-21971 affects Microsoft Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2022-21971?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-21971, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-21971

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Is Your Infrastructure Affected by CVE-2022-21971?

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