EUVD-2026-73174
GHSA-5cjw-mpq7-fpm5
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L because exploitation requires local account access; AC:H for race-condition requirement; PR:L as a valid local account is needed; full C/I/A impact consistent with kernel-level control.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
AnalysisAI
Use-after-free (CWE-416) in the Windows Kernel enables a low-privileged local attacker to escalate privileges to SYSTEM on a broad range of Windows client and server releases. The CVSS vector (AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) indicates full confidentiality, integrity, and availability compromise once triggered, though the high attack complexity (AC:H) implies a race-condition or specific timing requirement that raises the bar for reliable exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must hold a low-privileged local account on the target Windows system (PR:L); remote unauthenticated exploitation is not possible given AV:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The 7.0 CVSS score reflects genuine exploitation friction: AC:H indicates a race condition or specific kernel state must be won, and PR:L means the attacker must already hold a valid local account. … 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 vendor-released patches distributed via Windows Update and Microsoft Update Catalog as documented in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85360; exact patch build numbers per edition are listed in EUVD-2026-73174 above. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows systems (both client and server) in your environment and cross-reference against Microsoft's CVE-2026-85360 advisory to determine which versions require patching. …
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Same weakness CWE-416 – Use After Free
View allSame technique Privilege Escalation
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External POC / Exploit Code
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