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CVE-2026-50057

7.8 high SSVC exploitation: none Published
NVD · CVE.org

A local privilege escalation vulnerability in the Zimbra Collaboration Suite (ZCS) MTA package allows the Unix zimbra account to execute arbitrary commands as root. The installed sudo policy permits passwordless root execution of Postfix administration commands without restricting their arguments. An attacker can select a zimbra-controlled daemon_directory in the Postfix configuration and invoke postfix set-permissions, causing Postfix to execute the attacker's post-install program as root. The Postfix configuration directory is also writable by zimbra, so restricting postconf alone does not remove the execution path. Exploitation requires local command execution as zimbra on an MTA node. ZCS 10.1.16 and 10.1.21 are affected.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 7

  1. StatusUndergoing Analysis → PublishedNVD modified 2026-10-24 03:55
  2. StatusPublished → Undergoing AnalysisNVD modified 2026-10-24 04:18
  3. StatusAwaiting Analysis → PublishedNVD modified 2026-10-23 13:33
  4. StatusPublished → Awaiting AnalysisNVD modified 2026-10-23 16:44
  5. StatusReceived → PublishedNVD modified 2026-10-23 13:33
  6. StatusPublished → ReceivedNVD modified 2026-10-23 14:17
  7. First seenCVSS 7.8 · zimbraNVD modified 2026-10-23 13:33

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 2