X.400 confusion vulnerability CVE-2023-0286 25 May 2023Certain versions of OpenSSL contain a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName.
X.509 Certificate vulnerability CVE-2022-3786 and CVE-2022-3602 11 November 2022Buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking.