How severe is CVE-2024-45519?

CVE-2024-45519 has a CVSS score of 10/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2024-45519?

Affected package information for CVE-2024-45519 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2024-45519?

No patched version of the affected component has shipped for CVE-2024-45519 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

How do I detect CVE-2024-45519 in my code and dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for the affected component. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate CVE-2024-45519 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against CVE-2024-45519?

O3 pinpoints whether CVE-2024-45519 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is CVE-2024-45519 actively exploited in the wild?

Yes. There are 7 known exploit references for CVE-2024-45519, including 5 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

Is CVE-2024-45519 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2024-45519 (Synacor Zimbra Collaboration Suite (ZCS) Command Execution Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2024-10-03. CISA required all US federal civilian agencies to remediate this vulnerability by 2024-10-24. The required action was: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

When was CVE-2024-45519 published, and has it been updated?

CVE-2024-45519 was published on October 2, 2024 and was last updated on July 22, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2024-10-03 — agencies required to remediate by 2024-10-24

CVE-2024-45519

CRITICAL

CVE-2024-45519 is a critical-severity (CVSS 10) vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2024-10-03) — treat it as actively exploited and patch now. O3 Security confirms whether CVE-2024-45519 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Published

Oct 2, 2024

Updated

Jul 22, 2026

Affected

0 pkgs

Patched

None yet

Exploits

7 known

Description

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.

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.