CVE-2026-20849
HighCVSS 7.5Exploitation Probability (EPSS)
Elevated risk59th percentile - higher than 59% of all known CVEs
Summary
Vulnerability in Windows Kerberos relies on untrusted inputs in a security decision. This allows an authorized attacker to elevate privileges over a network.
Risk Assessment
An authorized user can escalate privileges, potentially leading to system compromise or access to sensitive data.
Recommendation
Install the latest security updates from Microsoft for Windows Kerberos. Limit trust in network authentication requests.
Other vulnerabilities in Windows Kerberos
See all- CVE-2026-83720High
A use after free vulnerability in Windows Kerberos allows an authorized attacker to elevate privileges locally.
- CVE-2026-70241High
Use after free vulnerability in Windows Kerberos. An authorized attacker can exploit it to elevate privileges locally.
- CVE-2026-70064High
Integer underflow (wrap or wraparound) in Windows Kerberos allows an authorized attacker to elevate privileges locally.
- CVE-2026-108132High
A double free vulnerability in Windows Kerberos allows an authorized attacker to elevate privileges locally.
- CVE-2022-37967High
Elevation of privilege vulnerability in Windows Kerberos. It could allow an attacker to gain higher privileges in a domain.
- CVE-2026-69822High
Numeric truncation error in Windows Kerberos allows an authorized attacker to elevate privileges locally.
- CVE-2026-69760High
Out-of-bounds read in Windows Kerberos allows an unauthorized attacker to deny service over a network.
- CVE-2026-69744High
Null pointer dereference in Windows Kerberos allows an unauthorized attacker to deny service over a network.
- CVE-2026-69685High
Heap-based buffer overflow in Windows Kerberos allows an authorized attacker to elevate privileges locally.
- CVE-2026-69676High
Authentication bypass by capture-replay in Windows Kerberos allows an authorized attacker to execute code over a network.
Original NVD description (English source)
Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS