EUVD-2026-44267
GHSA-v4p6-prp9-3jcx
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-delivered media parsed without auth (AV:N/PR:N/AC:L) but requires the victim to open the file (UI:R); code execution in user context yields full C/I/A High with no scope change.
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 lets an unauthenticated attacker run arbitrary code in the victim's context by delivering a malicious media file or stream that the target opens or plays. The flaw affects the Media Foundation multimedia framework across supported Windows 10, Windows 11 (through 26H1), and Windows Server 2016-2025 builds, and carries CVSS 8.8. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to open or play attacker-controlled media that is parsed by Windows Media Foundation (UI:R in the CVSS vector) - this is the concrete limiting factor: no exploitation occurs without that user action. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H = 8.8) describes a network-reachable, low-complexity, unauthenticated bug whose single gating factor is user interaction (UI:R) - the victim must open or play attacker-supplied media. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker emails or hosts a specially crafted audio/video file (or a link to one) and lures the target into opening it; when Windows Media Foundation parses the malformed stream, the heap-based buffer overflow triggers and runs the attacker's code in the user's security context, enabling malware installation or credential theft. Because privileges are those of the victim, a targeted user with local admin rights yields deeper compromise. … |
| Remediation | Apply the Microsoft security update for CVE-2026-57094 for each affected SKU - patch available per vendor advisory (reported by Microsoft) - via Windows Update or WSUS/MECM; the authoritative per-build fixed versions are listed at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57094. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, create an inventory of all Windows 10, 11, and Server 2016-2025 systems and obtain Microsoft's security update from official advisory channels. …
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External POC / Exploit Code
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