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Certificate Validation

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CVE-2026-34073: Incomplete DNS Name Constraint Enforcement Vulnerability

CVE-2026-34073 is a vulnerability in unspecified Microsoft products due to incomplete DNS name constraint enforcement on peer names, potentially leading to certificate validation bypass.

certificate validation man-in-the-middle dns name constraint tls cve-2026-34073

2r 1c 4d ago

critical advisory

Critical Certificate Validation Vulnerability in CISCO Webex Allows User Impersonation

2 rules 3 TTPs 1 CVE

A critical improper certificate validation vulnerability in CISCO Webex versions 39.6 - 45.4 (CVE-2026-20184) allows a remote, unprivileged attacker to impersonate users, gain unauthorized access, and join meetings without authorization, potentially impacting confidentiality, integrity, and availability.

cisco webex sso certificate-validation user-impersonation cve-2026-20184 cloud

2r 3t 1c 2w ago