CVE-2021-33788

HighCVSS 7.5

Published: 14/07/2021(UTC)Updated: 10/08/2026(UTC)Translated: 10/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

High risk

3.03%

86th percentile - higher than 86% of all known CVEs

Summary

Denial of service vulnerability in Windows LSA. Could cause service failure.

Risk Assessment

Risk of disruption of authentication services.

Recommendation

Apply Windows security updates.

Other vulnerabilities in Windows LSA

CVE-2022-26925HighActively exploited
A spoofing vulnerability in the Windows LSA service. An attacker can force a domain controller to authenticate to a malicious server.
CVE-2021-36942HighActively exploited
A spoofing vulnerability in Windows LSA (Local Security Authority).
CVE-2021-33786High
Security feature bypass vulnerability in Windows LSA (Local Security Authority). An attacker could bypass security mechanisms.

Original NVD description (English source)

Windows LSA Denial of Service Vulnerability

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