CVE-2025-54391 Auth bypass in n/a
Attackers with valid credentials can bypass Two-Factor Authentication via the EnableTwoFactorAuthRequest SOAP endpoint, gaining unauthorized account access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-54391?
CVE-2025-54391 is a critical authentication bypass vulnerability in n/a, published on 16 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the EnableTwoFactorAuthRequest SOAP endpoint of Zimbra Collaboration (ZCS) allows an attacker with valid user credentials to bypass Two-Factor Authentication (2FA) protection. The attacker can configure an additional 2FA method (either a third-party authenticator app or email-based 2FA) without presenting a valid authentication token or proving access to an already configured 2FA method. This bypasses 2FA and results in unauthorized access to accounts that are otherwise protected by 2FA.
Weakness: CWE-284
Which versions are affected by CVE-2025-54391?
How do I fix CVE-2025-54391?
No fix has been published for CVE-2025-54391 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-2025-54391 being exploited?
There is no known exploitation of CVE-2025-54391 in the wild and no public exploit code.
Sources
Also known as GHSA-34c6-vxrp-m855.