Microsoft Windows Codecs Library
CVE-2021-31192 — Windows Media Foundation Core Remote Code Execution Vulnerability
Executive Summary
None
Overview
7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
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
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.8
EPSS Score
0.02253
probability of exploitation in the next 30 days
0.80643 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
5 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 Version 2004 for 32-bit Systems | 5003173 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 2004 for ARM64-based Systems | 5003173 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 2004 for x64-based Systems | 5003173 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 20H2 for 32-bit Systems | 5003173 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 20H2 for ARM64-based Systems | 5003173 (Security Update) |
Important | Remote Code Execution | Yes |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
5003173 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
time, Zhangjie and willJ from cdsrc
References
On This Page