CVE-2026-58600: HEVC Video Extensions Elevation of Privilege Vulnerability
Published Sep 8, 2026
·Updated
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
29 affected componentsFixes available
Microsoft HEVC Video Extensions from Device Manufacturer<2.4.86.0
2.4.86.0
Microsoft HEVC Video Extensions from Device Manufacturer<2.5.25.0
2.5.25.0
Microsoft HEVC Video Extensions<2.4.87.0
2.4.87.0
Microsoft HEVC Video Extensions for Licensed Applications<2.4.85.0
2.4.85.0
Microsoft HEVC Video Extensions<2.4.87.0
Microsoft HEVC Video Extensions for Licensed Applications<2.4.85.0
All of the following
Microsoft HEVC Video Extensions from Device Manufacturer<2.4.86.0
Any of the following
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 11 22h2
Microsoft Windows 11 22h2
Microsoft Windows 11 23h2
Microsoft Windows 11 23h2
Microsoft Windows 11 24h2
Microsoft Windows 11 24h2
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows Server 2025
All of the following
Microsoft HEVC Video Extensions from Device Manufacturer<2.5.25.0
Any of the following
Microsoft Windows 11 25h2
Microsoft Windows 11 25h2
Microsoft Windows 11 26h1
Microsoft Windows 11 26h1
Remediation
Event History
Sep 8, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:12 PM
Data Sourced
via MITRE·05:12 PM
DescriptionSeverity
Data Sourced
via NVD·06:17 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
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.
2
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.
3
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.