CVE-2026-83775

HighCVSS 7.0

Published: 13/10/2026(UTC)Updated: 16/10/2026(UTC)Translated: 14/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.21%

10th percentile - higher than 10% of all known CVEs

Summary

A race condition (concurrent execution using shared resource with improper synchronization) in Windows Installer allows an authorized attacker to elevate privileges locally.

Risk Assessment

An attacker with local access could exploit this to escalate privileges, potentially resulting in system takeover.

Recommendation

Immediately install security updates for Windows Installer.

Other vulnerabilities in Windows Installer

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An elevation of privilege vulnerability exists in the Windows Installer when MSI packages process symbolic links, known as 'Windows Installer Elevation of Privilege Vulnerability'.
CVE-2026-96308High
Use-after-free vulnerability in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-96307High
Use-after-free vulnerability in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-96305High
Use-after-free vulnerability in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-96302High
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-88124High
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-88080High
Use after free vulnerability in Windows Installer. An authorized attacker can elevate privileges locally.
CVE-2026-88076High
Null pointer dereference vulnerability in Windows Installer. An authorized attacker can elevate privileges locally.

Original NVD description (English source)

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Installer allows an authorized attacker to elevate privileges locally.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS