PatchTheCVECVE-2026-81352: Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code
CVE-2026-81352 is a high-severity flaw (CVSS 8.8) affecting web media extensions. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
Why this priority
- High severity
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.8 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.6% (top 53%) |
| CISA exploited list | No |
| Weakness | CWE-122 |
| Published | 2026-09-08 |
| Last modified | 2026-09-30 |
Last updated 2026-09-30 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-81352?
web media extensions: upgrade to 1.2.42.0, 2.1.51.0. Exact commands for each OS are on this page.
Is CVE-2026-81352 being exploited?
CVE-2026-81352 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-81352 affect?
CVE-2026-81352 affects web media extensions. Severity is high (CVSS 8.8). Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
How urgent is CVE-2026-81352?
Priority 48/100. High severity; On your watchlist