MicrosoftCVE-2026-58599
Microsoft Windows Codecs Library: heap buffer overflow
High7.8CVE-2026-58599 · Published Sep 8, 2026 · updated Sep 9, 2026
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| HEVC Video Extensions Product | >= 1.0.0, < 2.4.87.0 | 2.4.87.0 |
| HEVC Video Extensions for Licensed Applications Product | >= 2.0.0.0, < 2.4.85.0 | 2.4.85.0 |
| HEVC Video Extensions from Device Manufacturer Product | >= 2.0.0.0, < 2.4.86.0 | 2.4.86.0 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-122
More Microsoft advisories
All Microsoft| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 8 | Microsoft Skype for Business: spoofing | High8.3 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: cross-site scripting | Medium6.5 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: spoofing | High7.1 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: information disclosure | Medium6.5 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: integer overflow | High7.5 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: out-of-bounds read | Medium6.5 | 6.0.9319.885+2 more |