EUVD-2026-73426
GHSA-v52m-wgmw-x6q5
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access only (AV:L), race-condition UAF requires high complexity (AC:H), low-privilege authenticated account required (PR:L); full local system compromise on success.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Push Notifications affects a broad range of Windows 10, Windows 11, and Windows Server releases. An authorized local attacker exploits a use-after-free (CWE-416) memory corruption condition to gain full system-level privileges, achieving high confidentiality, integrity, and availability impact within the vulnerable system. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid, authenticated local user account on the target system (PR:L); unauthenticated or remote exploitation is not possible per the AV:L/PR:L CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score with vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H accurately characterizes a meaningful but access-constrained local privilege escalation. … 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 Microsoft's released patches via Windows Update, Windows Server Update Services (WSUS), or Microsoft Update Catalog, targeting the exact fixed builds listed above per OS version (e.g., Windows Server 2025 to 10.0.26100.33438, Windows 11 23H2 to 10.0.22631.7582, Windows 10 21H2/22H2 to 10.0.19044.7725/10.0.19045.7725). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of Windows 10, Windows 11, and Windows Server systems across your environment and document their current OS build versions. …
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Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
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External POC / Exploit Code
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