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CVE-2022-21971

HighPublished

Windows Runtime Remote Code Execution Vulnerability

Published: Feb 9, 2022
Updated: Oct 21, 2025
Assigning CNA: microsoft
Evidence observed: Aug 18, 2022

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS probability estimate

53.9%

High · next 30 days

Percentile: 99.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

Windows Runtime Remote Code Execution Vulnerability

Sources

CVE-2022-21971-Windows-Runtime-RCEPoC
Proof-of-concept exploit for CVE-2022-21971, an uninitialized pointer free vulnerability in Windows Runtime's prauthproviders.dll, triggered via crafted RTF documents in Word or Wordpad.
CVE-2022-21971PoC
POC Of CVE-2022-21971

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