by Kastro
Paper/Archive/CVE-2025-54391

CVE-2025-54391

mitre — A vulnerability in the EnableTwoFactorAuthRequest SOAP endpoint of Zimbra Collaboration (ZCS) allows an attacker with valid user credenti…

EPSS 0.6%CVSS 9.1
critical.is priorityof 100
37
CVSS 9.1 (ADP)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 50.6.506 × 2010.1No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refwiki.zimbra.com/wiki/Zimbra_Security_Advisoriesrefwiki.zimbra.com/wiki/Security_Centerrefwiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy