CVSS 3.1
8.9 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:LCVE-2026-73570
High (8.9) in Synacor Zimbra Collaboration Suite (ZCS). In CISA KEV since 2026-08-21. EPSS 72% chance of exploitation in the next 30 days.
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.
Severity
- EPSS
- 72% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
- CISA KEV
- listed 2026-08-21, due 2026-08-24
- CWE
- CWE-78
- Published
- Modified
- Record from
- the NVD, synced
Affected
- synacor:zimbra_collaboration_suite