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Exploited vulnerability · CISA KEV

Is CVE-2024-45519 exploited? Yes: in CISA KEV since 3 Oct 2024

Gociux · Synacor Zimbra Collaboration Suite (ZCS) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2024-45519, Synacor Zimbra Collaboration Suite (ZCS) Command Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Oct 2024, 1 days after it was published. It affects Synacor Zimbra Collaboration Suite (ZCS). If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 3 Oct 2024
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity10CVSS 3.1 · critical
US federal due24 Oct 2024BOD 22-01 deadline

What it is

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

VendorSynacor (19 exploited CVEs in KEV)
ProductZimbra Collaboration Suite (ZCS)
VulnerabilitySynacor Zimbra Collaboration Suite (ZCS) Command Execution Vulnerability
WeaknessCWE-284
Published2 Oct 2024
Added to KEV3 Oct 2024
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for Zimbra Collaboration Suite (ZCS) in your asset inventory, including appliances and cloud images. Stack check lists every exploited Synacor CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 2 Oct 2024.
  4. Get told next time. Email alerts when CISA adds a CVE for Synacor.

Other exploited CVEs in Zimbra Collaboration Suite (ZCS)

References

Questions

Is CVE-2024-45519 being exploited?

Yes. CISA added CVE-2024-45519 to the Known Exploited Vulnerabilities catalog on 3 Oct 2024, which means there is reliable evidence of exploitation in the wild.

Is CVE-2024-45519 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2024-45519?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check Synacor's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Zimbra Collaboration Suite (ZCS) and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in October 2024 · Synacor scorecard · act-now radar.

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