CVE-2022-27924VulnerabilityPublished 08/04/2022Updated 10/24/2026
CVE-2022-27924: Synacor Zimbra Collaboration Suite (ZCS) Command Injection Vulnerability
Affects Synacor Zimbra Collaboration Suite (ZCS)Source CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 08/04/2022
- KEV deadline
- 08/25/2022
- Ransomware
- Used in ransomware campaigns
- EPSS
- 93.9% chance of exploitation in 30 days – higher than 99% of CVEs
What to do
CISA required action
Apply updates per vendor instructions.
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.