August 4, 2022 · Applied Cybernetics Group
CVE-2022-27924 — Synacor Zimbra Collaboration Suite (ZCS)
known ransomware use
Synacor Zimbra Collaboration Suite (ZCS) Command Injection Vulnerability
- Added to KEV
2022-08-04- Federal due date
2022-08-25- Vendor
- Synacor
- Product
- Zimbra Collaboration Suite (ZCS)
- EPSS
- 99.6th percentile (score 0.904, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2022-27924
CISA short description
Synacor Zimbra Collaboration Suite (ZCS) allows an attacker to inject memcache commands into a targeted instance which causes an overwrite of arbitrary cached entries.
Required action
Apply updates per vendor instructions.