CVE-2024-45519
KEVSynacor Zimbra Collaboration Suite (ZCS) Command Execution Vulnerability
Description
Synacor Zimbra Collaboration Suite (ZCS) contains an unspecified vulnerability in the postjournal service that may allow an unauthenticated user to execute commands.
The postjournal service in Zimbra Collaboration (ZCS) before 8.8.15 Patch 46, 9 before 9.0.0 Patch 41, 10 before 10.0.9, and 10.1 before 10.1.1 sometimes allows unauthenticated users to execute commands.
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HPublishedOct 2, 2024
Last modifiedJun 17, 2026
Added to KEVOct 3, 2024
Remediation dueOct 24, 2024
References
- wiki.zimbra.com/wiki/Security_CenterRelease Notes
- wiki.zimbra.com/wiki/Zimbra_Releases/10.0.9Release Notes
- wiki.zimbra.com/wiki/Zimbra_Releases/10.1.1Release Notes
- wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P46Release Notes
- wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P41Release Notes
- wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_PolicyNot Applicable
- blog.projectdiscovery.io/zimbra-remote-code-execution/Exploit
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-45519US Government Resource
0 recent articles mention this CVE
90
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 732 days
- CVSS
- 10.0 CRITICAL
- EPSS (30-day exploit probability)
- 99.9% · top 1% of all CVEs
- Weakness
- NVD-CWE-noinfo
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.