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CVE-2022-41352 Synacor CVE debrief

CVE-2022-41352 is a Synacor Zimbra Collaboration Suite (ZCS) arbitrary file upload vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2022-10-20. The KEV listing indicates known exploitation and makes this a high-priority patching item. CISA’s guidance for the entry is to apply updates per vendor instructions.

Vendor
Synacor
Product
Zimbra Collaboration Suite (ZCS)
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-10-20
Original CVE updated
2022-10-20
Advisory published
2022-10-20
Advisory updated
2022-10-20

Who should care

Administrators and security teams responsible for Synacor Zimbra Collaboration Suite (ZCS), especially organizations exposed to internet-facing mail services, should treat this as a priority remediation item.

Technical summary

The supplied sources identify the issue as an arbitrary file upload vulnerability in Synacor Zimbra Collaboration Suite (ZCS). The KEV record does not provide deeper technical detail in the supplied corpus, but it does confirm the vulnerability is known exploited and directs defenders to vendor updates.

Defensive priority

High. CISA KEV inclusion means this vulnerability should be remediated promptly using vendor guidance, with urgency driven by the known exploitation status and the potential for unauthorized file placement.

Recommended defensive actions

  • Review the vendor’s security guidance for Zimbra Collaboration Suite (ZCS) and apply the relevant updates or fixes.
  • Prioritize systems running affected ZCS versions, especially any internet-facing deployments.
  • Verify patch status and confirm remediation across all ZCS instances.
  • Monitor CISA KEV and vendor advisories for any additional guidance or follow-up updates.

Evidence notes

This debrief is based on the supplied CISA KEV record for CVE-2022-41352 and the linked official CVE/NVD resources. The corpus identifies the issue as an arbitrary file upload vulnerability in Synacor Zimbra Collaboration Suite (ZCS), with CISA listing it as known exploited on 2022-10-20 and directing defenders to apply vendor updates. No additional technical details were available in the supplied sources.

Official resources

Public debrief prepared from CISA KEV and official CVE/NVD links only. No exploit instructions or unsupported technical claims are included.