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CVE-2026-58600— HEVC Video Extensions Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft HEVC Video Extensions
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows Codecs Library是美国Microsoft公司的一款操作系统内置的多媒体编解码器库。 Microsoft Windows Codecs Library存在缓冲区错误漏洞，该漏洞源于Microsoft Windows Codecs Library存在堆缓冲区溢出，可能导致未经授权的攻击者在本地提升权限。

CVSS 7.8 · High EPSS 0.33% · P26

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 3

VendorProduct Version RangeStatus
Microsoft HEVC Video Extensions 1.0.0< 2.4.87.0 affected
Microsoft HEVC Video Extensions for Licensed Applications 2.0.0.0< 2.4.85.0 affected
Microsoft HEVC Video Extensions from Device Manufacturer 2.0.0.0< 2.4.86.0 affected
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I. Basic Information for CVE-2026-58600

Vulnerability Information
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Vulnerability Title
HEVC Video Extensions Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to elevate privileges locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Codecs Library 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Codecs Library是美国Microsoft公司的一款操作系统内置的多媒体编解码器库。 Microsoft Windows Codecs Library存在缓冲区错误漏洞，该漏洞源于Microsoft Windows Codecs Library存在堆缓冲区溢出，可能导致未经授权的攻击者在本地提升权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft HEVC Video Extensions 1.0.0 ~ 2.4.87.0 -
Microsoft HEVC Video Extensions for Licensed Applications 2.0.0.0 ~ 2.4.85.0 -
Microsoft HEVC Video Extensions from Device Manufacturer 2.0.0.0 ~ 2.4.86.0 -

II. Public POCs for CVE-2026-58600

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III. Intelligence Information for CVE-2026-58600

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Vendor Advisories for CVE-2026-58600 (1)

Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total

CVE-2026-83941 9.9 CRITICAL Entra ID Elevation of Privilege Vulnerability
CVE-2026-70296 9.8 CRITICAL Windows Imaging Component Remote Code Execution Vulnerability
CVE-2026-69408 9.8 CRITICAL Microsoft Windows Media Foundation Remote Code Execution Vulnerability
CVE-2026-69768 9.8 CRITICAL Windows RNDIS Remote Code Execution Vulnerability
CVE-2026-69493 9.8 CRITICAL Windows Event Logging Service Remote Code Execution Vulnerability
CVE-2026-69910 9.8 CRITICAL Windows Hyper-V Remote Code Execution Vulnerability
CVE-2026-69431 9.8 CRITICAL Telnet Client Remote Code Execution Vulnerability
CVE-2026-69491 9.8 CRITICAL Microsoft DirectMusic Remote Code Execution Vulnerability
CVE-2026-78509 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-78510 9.8 CRITICAL Microsoft Word Remote Code Execution Vulnerability
CVE-2026-69463 9.8 CRITICAL Windows NTFS Remote Code Execution Vulnerability
CVE-2026-69590 9.8 CRITICAL Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-69496 9.8 CRITICAL Windows Compressed Folder Remote Code Execution Vulnerability
CVE-2026-69525 9.8 CRITICAL Remote Desktop Services Remote Code Execution Vulnerability
CVE-2026-69715 9.8 CRITICAL Windows Direct Show Remote Code Execution Vulnerability
CVE-2026-73025 9.8 CRITICAL Windows iSCSI Security Feature Bypass Vulnerability
CVE-2026-69730 9.8 CRITICAL Windows DNS Server Remote Code Execution Vulnerability
CVE-2026-73009 9.8 CRITICAL Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability
CVE-2026-73010 9.8 CRITICAL Microsoft Failover Cluster Remote Code Execution Vulnerability
CVE-2026-69819 9.8 CRITICAL RPC Runtime Library Remote Code Execution Vulnerability

Showing top 20 of 966 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: HEVC Video Extensions
Same vendor: Microsoft
Same weakness: CWE-122

V. Comments for CVE-2026-58600

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