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Fri, 23 Oct 2026 14:30:00 +0000
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ssvc
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Fri, 23 Oct 2026 13:45:00 +0000
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| Description | A local privilege escalation vulnerability in the optional dnscache package of Zimbra Collaboration Suite (ZCS) allows the Unix zimbra account to access files with root privileges. The passwordless sudo policy permits arbitrary arguments to zmunbound, whose wrapper forwards them to Unbound without restricting the configuration path. An attacker can supply a configuration that retains root privileges and disables the chroot. Include directives expose root-readable file contents through parser errors, while an attacker-selected logfile path creates a root-owned file or appends Unbound log records to an existing file. This can disclose password hashes and private keys and corrupt privileged configuration files, preventing affected services from starting with the modified configuration. The affected configuration is present in ZCS 10.1.16 and 10.1.21 dnscache packages. | |
| Title | Zimbra Collaboration Suite Local Privilege Escalation via Unrestricted zmunbound Sudo Configuration | |
| Weaknesses | CWE-732 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: rapid7
Published:
Updated: 2026-10-23T13:50:34.330Z
Reserved: 2026-09-18T12:22:38.559Z
Link: CVE-2026-93640
Updated: 2026-10-23T13:50:30.425Z
Status : Received
Published: 2026-10-23T14:17:57.757
Modified: 2026-10-23T14:17:57.757
Link: CVE-2026-93640
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