Synacor Zimbra Collaboration Suite (ZCS) Command Execution Vulnerability
n/a — n/a
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.
10.0
99.9%
Vector breakdown
- Attack complexity
- Low
- Attack vector
- Network
- Availability
- High
- Confidentiality
- High
- Integrity
- High
- Privileges required
- None
- Scope
- Changed
- User interaction
- None
CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N
- Published
- Oct 2, 2024
- Modified
- Feb 3, 2026
- Added to KEV
- Oct 3, 2024
- Federal patch due
- Oct 24, 2024
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2024-45519, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2024-45519 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
References
How this class of flaw gets exploited
Frequently asked questions
What is CVE-2024-45519?
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.
How severe is CVE-2024-45519?
CVE-2024-45519 has a CVSS base score of 10.0 out of 10 (CVSS 3.1).
Is CVE-2024-45519 actively exploited in the wild?
Yes. CVE-2024-45519 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Oct 3, 2024, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2024-45519?
99.9% - meaning FIRST.org's EPSS model estimates a 99.9% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
What type of vulnerability is CVE-2024-45519?
CVE-2024-45519 is classified under CWE-78 (CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')).
Cross-checked against
Impactr finds and proves whether CVE-2024-45519 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.