Synacor Zimbra Collaboration Suite (ZCS): Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability
› Synacor Zimbra Collaboration Suite (ZCS)
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- started
- Jan 22, 2026
- closed
- Jan 22, 2026
- CVEs
- 1
- sources
- 3
## summary
Synacor Zimbra Collaboration Suite (ZCS) contains a PHP remote file inclusion vulnerability that could allow for remote attackers to craft requests to the /h/rest endpoint to influence internal request dispatching, allowing inclusion of arbitrary files from the WebRoot directory. Added to CISA KEV on 2026-01-22.
severity: Actively exploited (CISA KEV)
## cve ids[1]
## affected
- See vendor advisory / CISA notes (versions not always listed in KEV feed)
## fixed in
- See vendor advisory linked in sources
## timeline[1]
CISA added CVE-2025-68645 to the KEV catalog (due 2026-02-12).
## advisories[2]
## news & write-ups[1]
## notes & caveats
Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).
