EUVD-2026-44272
GHSA-g8ch-3246-6ggg
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Remote crafted-media delivery gives AV:N/AC:L/PR:N, but the victim must open the file (UI:R); code runs in-process without scope change (S:U) yielding full C/I/A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
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 attacker to run arbitrary code by tricking a user into opening a maliciously crafted media file or stream. The flaw is a heap-based buffer overflow (CWE-122) affecting a broad range of Windows client and server releases from Windows 10 1607 through Windows 11 26H1 and Windows Server 2016 through 2025. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires user interaction (CVSS UI:R): the victim must open, play, or preview an attacker-supplied malicious media file or stream that is processed by Windows Media Foundation - this is the concrete trigger condition. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (base 8.8) indicates network reach, low attack complexity, no privileges, but required user interaction, with high impact to confidentiality, integrity, and availability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious media file or streaming URL that triggers the heap overflow in Media Foundation and delivers it via a phishing email attachment, a compromised website, or a chat link. When the victim opens or previews the file with an application backed by the Windows media stack, the overflow corrupts heap memory and executes attacker-controlled code in the context of the user. … |
| Remediation | Patch available per vendor advisory: apply the Microsoft security update for your specific Windows build as published at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57087, which supplies the fixed cumulative update KB and build number for each affected version; exact per-build fix versions should be taken directly from that MSRC page rather than assumed. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, obtain and validate the Microsoft security patch in development and test environments (Windows 10 through 11 26H1 and Windows Server 2016 through 2025) for compatibility. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Heap Overflow
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External POC / Exploit Code
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