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CVE-2026-56189

nvd nist
Published: Jul 14, 2026Modified: Jul 22, 2026

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8.4
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.5 / Impact: 5.9
Source: NVD

Description

Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.

Affected (15)

Microsoft
12 products
Windows 10 1607
Windows 10 1809
Windows 10 21h2
Windows 10 22h2
Windows 11 24h2
Windows 11 25h2
Windows 11 26h1
Windows Server 2012
Windows Server 2016
Windows Server 2019
Windows Server 2022
Windows Server 2025
Configuration A
15 vulnerable
Vulnerable SoftwareAffected Versions
Microsoft
Windows 10 1607
Before 10.0.14393.9339
Windows 10 1607
Before 10.0.14393.9339
Microsoft
Windows 10 1809
Before 10.0.17763.9020
Windows 10 1809
Before 10.0.17763.9020
Windows 10 21h2
Before 10.0.19044.7548
Windows 10 22h2
Before 10.0.19045.7548
Windows 11 24h2
Before 10.0.26100.8875
Windows 11 25h2
Before 10.0.26200.8875
Windows 11 26h1
Before 10.0.28000.2525
Microsoft
Windows Server 2012
All versions
Windows Server 2012
Version r2
Windows Server 2016
Before 10.0.14393.9339
Windows Server 2019
Before 10.0.17763.9020
Windows Server 2022
Before 10.0.20348.5386
Windows Server 2025
Before 10.0.26100.33158

Related CWEs

CWE-122
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References (1)

Source: secure@microsoft.com
PatchVendor Advisory

Timeline

No history available yet.