CVE-2026-20833: Windows Kerberos Information Disclosure Vulnerability
Use of a broken or risky cryptographic algorithm in Windows Kerberos allows an authorized attacker to disclose information locally.
Other sources
Windows Kerberos Information Disclosure Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.22968Patch KB5073696 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.25868Patch KB5073698 - Upgrade
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Fixed in 6.0.6003.23717Patch KB5073700 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.1.7601.28117Patch KB5073699 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.8783Patch KB5073722 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.32230Patch KB5073379 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.25398.2092Patch KB5073450 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.8276Patch KB5073723 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.4648Patch KB5073457
Event History
Frequently Asked Questions
What is the severity of CVE-2026-20833?
The severity of CVE-2026-20833 is classified as important.
How do I fix CVE-2026-20833?
To fix CVE-2026-20833, apply the recommended patches provided by Microsoft for the affected versions of Windows Server.
What systems are affected by CVE-2026-20833?
CVE-2026-20833 affects various versions of Windows Server including 2008, 2012, 2016, 2019, and 2022.
Can CVE-2026-20833 be exploited remotely?
CVE-2026-20833 requires local access for exploitation, making it less of a threat from remote attackers.
What are the consequences of exploiting CVE-2026-20833?
Exploiting CVE-2026-20833 can lead to information disclosure, allowing unauthorized users to access sensitive information.