OpsBuzz

Alert

Synacor Zimbra Collaboration Suite ZCS Command Execution Vulnerability

Synacor Zimbra Collaboration Suite ZCS contains an unspecified vulnerability in the postjournal service that may allow an unauthenticated user to execute c

Security · HIGH
Source: CISA Known Exploited VulnerabilitiesMay 2, 2026, 4:51 PMSecurityhigh

Full content

Synacor Zimbra Collaboration Suite (ZCS) contains an unspecified vulnerability in the postjournal service that may allow an unauthenticated user to execute commands.

Vendor: Synacor

Product: Zimbra Collaboration Suite (ZCS)

Due date: 2024-10-24

Known ransomware use: Unknown

Why it matters

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Related alerts