CVE-2026-58600: HEVC Video Extensions Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to elevate privileges locally.
Other sources
HEVC Video Extensions Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2.4.86.0 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2.5.25.0 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2.4.87.0 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2.4.85.0
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
The attack vector is local and requires no privileges beforehand. Exploitation requires user interaction.
Which software packages are identified as affected?
The affected products listed are Microsoft HEVC Video Extensions, Microsoft HEVC Video Extensions from Device Manufacturer, and Microsoft HEVC Video Extensions for Licensed Applications.
What could a successful exploit allow?
A successful heap-based buffer overflow exploit could allow an unauthorized local attacker to elevate privileges. The supplied severity vector indicates high impacts to confidentiality, integrity, and availability.