CVE-2025-5715 Signal App Biometric Authentication missing critical step in authentication
Attackers with physical access can bypass biometric authentication in the Signal Android app due to a missing critical verification step.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-5715?
CVE-2025-5715 is a low-severity authentication bypass vulnerability in Signal App, published on 6 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was found in Signal App 7.41.4 on Android. It has been declared as problematic. This vulnerability affects unknown code of the component Biometric Authentication Handler. The manipulation leads to missing critical step in authentication. It is possible to launch the attack on the physical device. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-5715?
It affects 1 product.
Products include Signal Signal.
How do I fix CVE-2025-5715?
No fix has been published for CVE-2025-5715 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-5715 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5715 exists.
Other vulnerabilities in Signal App
Sources
Also known as GHSA-2g9r-w7mh-f2h2.