Vulnerability in Zimbra Collaboration
CVE-2026-73576
In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the OnlyOffice integration. The zimbraDocumentEditingJwtSecret is generated using an insecure random number generator, resulting in ins…
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N.
Affected products
- Zimbra Collaboration — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-73576?
- CVE-2026-73576 is a medium-severity vulnerability in Zimbra Collaboration, classified under CWE-1241. CVSS score: 6.3/10. Published 2026-08-13.
- How severe is CVE-2026-73576?
- Medium severity. CVSS v3 base score is 6.3 out of 10.