EUVD-2026-72965
GHSA-34jp-8qpg-jfwf
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Remote unauthenticated memory-corruption RCE with full impact, but media-parsing flaws realistically need a victim to open/preview crafted content, so UI:R rather than UI:N.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound 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, remote attacker run arbitrary code by delivering a malformed media file or stream that triggers an integer overflow leading to a heap-based buffer overflow. All supported Windows client and server editions from Windows 10 1607 and Server 2012 through Windows 11 26H1 and Server 2025 are affected below the fixed builds. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target to process an attacker-supplied crafted media file or stream through Windows Media Foundation - i.e. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The supplied CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, C:H/I:H/A:H, 9.8) describes the maximum-severity case: remote, unauthenticated, low-complexity code execution with full impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft security update for your specific Windows build via Windows Update or WSUS/SCCM - Patch available per vendor advisory, with fixed builds including Windows 11 24H2 10.0.26100.9445, 23H2 10.0.22631.7582, Windows 10 22H2 10.0.19045.7725, Server 2022 10.0.20348.5622, and Server 2025 10.0.26100.33438 (full per-edition fixed versions in EUVD-2026-72965); see https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69408. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all systems running Windows 10 1607 or later, Windows 11 26H1 or earlier, and Windows Server 2012 through 2025; assess organizational exposure to untrusted media files and prioritize patch sequencing. …
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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
Leaving vuln.today