CVE-2020-8633 json
An issue was discovered in Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7.
published 2020-02-18 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-29481
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 0
- none known
Summary
An issue was discovered in Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7. When grantors revoked a shared calendar in Outlook, the calendar stayed mounted and accessible.
Patch / fix
- synacor zimbra_collaboration_suite 8.8.15
Exploit prediction
1.07% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-281 Improper Preservation of Permissions
References
-
wiki.zimbra.com
/wiki/Zimbra_Releases/8.8.15/P7
vendor-advisory
Sources
- CVE List CVE-2020-8633
- NVD CVE-2020-8633
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.