What’s Vulnerable › Vulnerabilities

CVE-2021-27215

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-03-03 · updated 2026-06-17
• Weakness: CWE-306

Description

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.

Affected products

• Genuagate: through 9.0; from 10.0 through 10.1; 9.0, 9.0-p1, 9.0-p10, 9.0-p11, 9.0-p12, 9.0-p13 (+24)

References

• https://kunde.genua.de/en/overview/genugate.html
• https://sec-consult.com/vulnerability-lab/advisory/authentication-bypass-genua-genugate/
• https://www.genua.de/en/it-security-solutions/high-resistance-firewall-genugate
• https://kunde.genua.de/en/overview/genugate.html
• https://sec-consult.com/vulnerability-lab/advisory/authentication-bypass-genua-genugate/
• https://www.genua.de/en/it-security-solutions/high-resistance-firewall-genugate

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