EUVD-2026-43917
GHSA-7hhr-mg24-43fp
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Race condition needs precise timing (AC:H) and an existing authenticated foothold (PR:L); the reported network vector (AV:N) is retained but flagged as needing vendor confirmation, with full C/I/A impact from privilege elevation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Elevation of privilege in the Windows Media component of Windows 11 (versions 24H2, 25H2, and 26H1) allows an authorized attacker to win a race condition and gain higher privileges over a network. The CVSS 3.1 base score is 7.5 with full confidentiality, integrity, and availability impact, though the high attack complexity reflects the timing precision needed to exploit the flaw. …
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 | Exploitation requires the attacker to already hold valid low-level privileges on the target (PR:L - an authenticated principal, not an anonymous remote actor) and to reliably win a race condition in the Windows Media component, which the AC:H rating confirms is non-trivial and timing-sensitive (multiple attempts likely needed). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS vector (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) signals a serious impact ceiling - full C/I/A compromise - but two factors temper real-world priority: high attack complexity (AC:H), inherent to winning a race condition reliably, and the requirement for existing low privileges (PR:L), meaning the attacker must already be an authenticated principal. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated low-privileged user on a Windows 11 (24H2/25H2/26H1) system repeatedly triggers concurrent operations in the Windows Media component, racing to hit the unsynchronized window and corrupt shared state to escalate to higher privileges. Given AC:H, success requires many attempts and precise timing rather than a single deterministic shot. … |
| Remediation | Patch available per vendor advisory: apply the Microsoft security update for the affected Windows 11 branch as documented at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50379, prioritizing systems running versions 24H2, 25H2, and 26H1. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows 11 systems running affected versions (24H2, 25H2, 26H1) and assess their business criticality. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Windows 11 Version 24H2
View allLocal privilege escalation in the Microsoft Windows Kernel allows an unauthorized attacker to gain elevated (SYSTEM-leve
Local privilege escalation in the Windows Win32K kernel subsystem (CWE-122 heap-based buffer overflow) lets an already-a
Local privilege escalation in the Windows Kernel lets an already-authenticated attacker corrupt kernel memory via a use-
Local code execution in the Windows DHCP Client service stems from a use-after-free (CWE-416) memory-corruption flaw aff
Local code execution in the Microsoft Message Queuing (MSMQ) Queue Manager affects a broad range of Windows client and s
Elevation of privilege in the Windows NTFS file-system driver lets an already-authenticated local user escalate to SYSTE
Local code execution in the Windows Media component of supported Windows 10, Windows 11, and Windows Server (2016 throug
Local privilege escalation in the Microsoft Windows Kernel allows an already-authenticated attacker to elevate to SYSTEM
Elevation of privilege in the Windows Hyper-V virtual network switch (VMSwitch) lets an authenticated attacker operating
Remote code execution in the Windows Server Network driver stems from a race condition (CWE-362) that lets an unauthoriz
Remote code execution in Microsoft Windows Remote Desktop (RDP) allows an unauthorized network attacker to run arbitrary
Remote code execution in Microsoft Windows Message Queuing (MSMQ) allows an unauthenticated attacker to run arbitrary co
Same weakness CWE-362 – Race Condition
View allSame technique Race Condition
View allShare
External POC / Exploit Code
Leaving vuln.today