CVE-2025-54391 Details
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.
A vulnerability exists in the EnableTwoFactorAuthRequest SOAP endpoint of Zimbra Collaboration (ZCS) versions 8.8.15 prior to 8.8.15 Patch 47, 9.0.0 prior to 9.0.0 Patch 46, 10.0.0 through 10.0.16 and 10.1.0 through 10.1.10. This vulnerability allows an attacker with valid user credentials to bypass Two-Factor Authentication (2FA) by modifying 2FA settings without a valid authentication token. The attacker can add a third-party authenticator app or email-based 2FA, gaining unauthorized access to accounts that require 2FA.
Users can upgrade to ZCS 10.0.16, 10.1.10, 9.0.0 Patch 46 or 8.8.15 Patch 47, all of which include the necessary fix. Instructions for upgrading Zimbra Collaboration are available on the Zimbra website.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 16, 2025CISA-ADP
Assessed Sep 17, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wiki.zimbra.com/wiki/Security_Center | [email protected] | AdvisoryBundleVendor |
| https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy | [email protected] | Vendor |
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | [email protected] | AdvisoryBundleRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| Zimbra Collaboration | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Sep 17, 2025 | CVE Modified | CISA-ADP |
| Sep 16, 2025 | New CVE Received | [email protected] |