EUVD-2026-44132
GHSA-rpcw-p2wq-6jgp
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local elevation of privilege from an authenticated low-privileged user (AV:L, PR:L), low complexity and no interaction, yielding full SYSTEM-level C/I/A impact with unchanged scope.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Use after free in Windows Media allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Microsoft Windows Media (a component shipping in Windows 11 versions 24H2, 25H2, and 26H1) lets an authenticated local attacker execute code at elevated privilege by triggering a use-after-free (CWE-416) memory-corruption condition. Reported by Microsoft with a vendor patch available, it carries CVSS 7.8 (High) and can yield full confidentiality, integrity, and availability compromise of the host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local, authenticated access to the target: the CVSS vector AV:L/PR:L means the attacker must already be able to run code as at least a low-privileged user on the affected Windows 11 host (24H2, 25H2, or 26H1) and interact with the Windows Media component to trigger the use-after-free. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, base 7.8) describes a locally-exploitable, low-complexity flaw requiring low privileges and no user interaction, with high impact across confidentiality, integrity, and availability but no scope change. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has gained a low-privileged foothold on a Windows 11 machine - for example a standard domain user on a shared or RDP-accessed workstation - runs a crafted program or opens specially malformed media that drives the Windows Media component through a use-after-free, corrupting a freed object to hijack execution and elevate to SYSTEM. No user interaction from another party and no special network position is required, but local access is mandatory (AV:L). … |
| Remediation | Patch available per vendor advisory: apply the Microsoft update for CVE-2026-50677 via the standard monthly Windows Update / WSUS / Intune channel for the relevant Windows 11 branch (24H2, 25H2, or 26H1), referencing the MSRC guidance at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50677 for the exact KB and build for your version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify Windows 11 systems running versions 24H2, 25H2, or 26H1, prioritizing shared workstations and developer machines. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
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