EUVD-2026-56344
GHSA-6wgm-2w24-7r22
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only race condition (AV:L, AC:H) requires an existing low-privilege account (PR:L); successful exploitation yields full SYSTEM access (C:H/I:H/A:H) with no scope change beyond the compromised host.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Push Notifications exposes a broad range of Microsoft Windows desktop and server editions to full SYSTEM-level compromise by an authenticated low-privileged local attacker. The flaw is a race condition (CWE-362) in which concurrent threads access a shared resource without adequate synchronization, creating a timing window that can be manipulated to corrupt execution state and redirect control to a privileged context. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must hold a low-privileged local user account on the target Windows system (confirmed by PR:L in CVSS vector), obtainable through interactive logon, remote desktop access, or prior remote code execution as an unprivileged process. … 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 represents a well-calibrated threat: the attack surface is constrained to local, authenticated sessions and requires successfully winning a timing race (AC:H), which lowers mass-exploitation feasibility compared to network-reachable or low-complexity flaws. … 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 | Microsoft has released cumulative updates resolving this vulnerability for all affected Windows editions, distributed via Windows Update, Windows Server Update Services, and the Microsoft Update Catalog; the full advisory is at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62690. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all Windows desktop and server systems in your environment using WSUS, Intune, or similar management tools to establish remediation scope. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Windows 10 1809
View allWindows MSHTML component contains a remote code execution vulnerability that allows attackers to craft malicious ActiveX
<p>A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged fi
Windows MSDT (Microsoft Support Diagnostic Tool) allows remote code execution when called via the ms-msdt URL protocol f
Windows Win32k contains an out-of-bounds write vulnerability enabling local privilege escalation to SYSTEM, exploited by
Windows Print Spooler Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no auth
Windows contains an elevation of privilege vulnerability known as 'HiveNightmare' or 'SeriousSAM' where overly permissiv
Windows Search Remote Code Execution Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely explo
Internet Shortcut Files Security Feature Bypass Vulnerability. Rated high severity (CVSS 8.1), this vulnerability is rem
Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resour
Windows Kernel contains a TOCTOU race condition vulnerability allowing local privilege escalation, exploited by the OilR
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in
Windows Internet Shortcut Files (.url) contain an external control vulnerability (CVE-2025-33053, CVSS 8.8) that enables
Same weakness CWE-362 – Race Condition
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today