CVE-2021-27215

An issue was discovered in genua genugate before 9.0 Z p19, 9.1.x through 9.6.x before 9.6 p7, and 10.x before 10.1 p4. The Web Interfaces (Admin, Userweb, Sidechannel) can use different methods to perform the authentication of a user. A specific authentication method during login does not check the provided data (when a certain manipulation occurs) and returns OK for any authentication request. This allows an attacker to login to the admin panel as a user of his choice, e.g., the root user (with highest privileges) or even a non-existing user.

• CWE-306

• https://kunde.genua.de/en/overview/genugate.htmlPatch, Vendor Advisory
• https://sec-consult.com/vulnerability-lab/advisory/authentication-bypass-genua-genugate/Exploit, Third Party Advisory
• https://www.genua.de/en/it-security-solutions/high-resistance-firewall-genugateProduct
• https://kunde.genua.de/en/overview/genugate.htmlPatch, Vendor Advisory
• https://sec-consult.com/vulnerability-lab/advisory/authentication-bypass-genua-genugate/Exploit, Third Party Advisory
• https://www.genua.de/en/it-security-solutions/high-resistance-firewall-genugateProduct

Published

Mar 3, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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