EUVD-2026-73619
GHSA-mc75-6hpq-xrg5
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only UAF requiring low-privileged session and race-condition exploitation (AC:H); full C/I/A impact justified by privilege escalation to SYSTEM with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Media allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Media on all supported Microsoft Windows desktop and server releases allows a locally authenticated low-privileged attacker to gain SYSTEM-level access by exploiting a use-after-free memory condition (CWE-416). The CVSS AC:H metric indicates exploitation is non-trivial, consistent with a race condition or complex heap-manipulation sequence required to reliably control freed memory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privileged local user session on the affected Windows system - the CVSS AV:L/PR:L vector confirms no remote or unauthenticated attack path exists. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 base score correctly reflects a local-only, high-complexity privilege escalation with full post-exploitation 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 the relevant Windows version via Windows Update, WSUS, or the Microsoft Update Catalog; the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69891 lists the specific KB numbers. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows deployments and identify systems with local user access, particularly shared workstations, RDP-accessible servers, and development environments. …
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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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