CVE-2026-58600

HIGH CVSS 3.1: 7.8 EPSS 0.48%
Updated Sep 09, 2026
Microsoft
Parameter Value
CVSS 7.8 (HIGH)
Affected Versions 1.0.0 — 2.4.87.0
Fixed In 2.4.87.0
Type CWE-122 (Heap-based Buffer Overflow)
Vendor Microsoft
Public PoC No

Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to elevate privileges locally.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 3

Configuration From (including) Up to (excluding)
Microsoft Hevc_Video_Extensions
cpe:2.3:a:microsoft:hevc_video_extensions:*:*:*:*:*:*:*:*
1.0.0 2.4.87.0
Microsoft Hevc_Video_Extensions_For_Licensed_Appplications
cpe:2.3:a:microsoft:hevc_video_extensions_for_licensed_appplications:*:*:*:*:*:*:*:*
2.0.0.0 2.4.85.0
Microsoft Hevc_Video_Extensions_From_Device_Manufacturer
cpe:2.3:a:microsoft:hevc_video_extensions_from_device_manufacturer:*:*:*:*:*:*:*:*
2.0.0.0 2.4.86.0