CVE-2025-54391
CRITICAL EPSS 43.4%
Published Sep 16, 20259mo ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Published Sep 16, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
43.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-284
References 3
- wiki.zimbra.com https://wiki.zimbra.com/wiki/Security_Center
- wiki.zimbra.com https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy
- wiki.zimbra.com https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.