CVE-2026-85943

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

0.19%

8th percentile - higher than 8% of all known CVEs

Summary

A time-of-check time-of-use (TOCTOU) race condition in Reliable Multicast Transport Driver (RMCAST) allows an authorized attacker to elevate privileges locally.

Risk Assessment

An attacker with system access could exploit the race condition to gain higher privileges, potentially resulting in full control over the affected machine.

Recommendation

Promptly install Windows security updates and monitor for unusual activity in the RMCAST driver.

Other vulnerabilities in Reliable Multicast Transport Driver (RMCAST)

CVE-2026-69530High
Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.

Original NVD description (English source)

Time-of-check time-of-use (toctou) race condition in Reliable Multicast Transport Driver (RMCAST) allows an authorized attacker to elevate privileges locally.

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