CVE-2021-33764
MediumCVSS 5.9Exploitation Probability (EPSS)
High risk86th percentile - higher than 86% of all known CVEs
Summary
Information disclosure vulnerability in Windows Key Distribution Center (KDC). An attacker could exploit this flaw to obtain information that should be protected.
Risk Assessment
Risk of exposing sensitive authentication-related information, potentially facilitating attacks on Kerberos infrastructure.
Recommendation
Install Windows security updates that address this vulnerability.
Other vulnerabilities in Windows Key Distribution Center
See all- CVE-2026-69650High
Improper verification of cryptographic signature in Windows Key Distribution Center allows an authorized attacker to elevate privileges locally.
- CVE-2026-69640Medium
Incorrect authorization in Windows Key Distribution Center allows an authorized attacker to bypass a security feature over a network.
- CVE-2026-84001High
Out-of-bounds read in Windows Key Distribution Center allows an unauthorized attacker to deny service over a network.
- CVE-2026-69712High
Use after free in Windows Key Distribution Center allows an authorized attacker to execute code over a network.
Original NVD description (English source)
Windows Key Distribution Center Information Disclosure Vulnerability
Vulnerability data from NVD (NIST) · CISA KEV · EPSS