EUVD-2026-44266
GHSA-95p8-vgfr-p8pm
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Network-delivered malicious media (AV:N), no auth needed (PR:N), but the victim must open the file (UI:R); a heap RCE yields full C:H/I:H/A:H within the process (S:U).
Primary rating from Vendor (microsoft).
CVSS VectorNVD
Lifecycle Timeline
6DescriptionNVD
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
AnalysisAI
Remote code execution in Microsoft Windows Media Foundation allows an unauthenticated network attacker to run arbitrary code by triggering a heap-based buffer overflow (CWE-122) in the media-processing pipeline, per the CVSS:3.1 vector (AV:N/PR:N/UI:N). The flaw affects a broad range of client and server SKUs from Windows 10 1607 through Windows 11 26H1 and Windows Server 2016 through 2025. Microsoft has released patches; there is no public exploit identified at time of analysis and it is not listed in CISA KEV, with EPSS estimating a modest 0.83% 30-day exploitation probability.
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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