CVE-2023-21818

HighCVSS 7.5

Published: 14/02/2023(UTC)Updated: 19/08/2026(UTC)Translated: 19/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Very high risk

43.17%

99th percentile - higher than 99% of all known CVEs

Denial of Service vulnerability in Windows Secure Channel. An attacker could exploit it to cause the system to stop responding.

The risk is the potential disruption of services relying on the secure channel, leading to downtime.

Install the latest Windows security updates.

Original NVD description (English source)

Windows Secure Channel Denial of Service Vulnerability