EUVD-2026-43905
GHSA-6765-2pwx-hv54
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local elevation of privilege requiring an authenticated user (AV:L, PR:L); use-after-free race condition drives AC:H; successful SYSTEM elevation yields full C/I/A with unchanged scope.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:H/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 the Windows Media component affects a broad range of Microsoft Windows client and server editions (Windows 10 1607 through Windows 11 26H1, and Windows Server 2016 through 2025). A low-privileged authenticated attacker can abuse a use-after-free (CWE-416) memory corruption flaw to elevate to higher privileges, achieving full confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already be an authenticated local user (CVSS PR:L) with the ability to execute code on the target and interact with the Windows Media component; it is not remotely exploitable (AV:L) and needs no user interaction (UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score is 7.0 (High) with vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who already has a low-privileged foothold on a Windows host - for example a standard domain user on a shared RDS server or a compromised service account - triggers the Windows Media use-after-free by racing an operation that frees and then reuses a media object, reclaiming the freed memory to hijack privileged execution and elevate to SYSTEM. The high attack complexity means the attacker may need multiple attempts to win the timing window; no public exploit code is currently known. |
| Remediation | Patch available per vendor advisory: apply the Microsoft security update for CVE-2026-50358 delivered through the standard Patch Tuesday / Windows Update channel, prioritizing multi-user and shared systems (terminal/RDS servers, jump hosts) where low-privileged users coexist with sensitive workloads. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, 11, and Server 2016-2025 systems and identify those used for critical infrastructure or administrative functions. …
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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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