CVE-2026-93643 — Zimbra Collaboration Suite OnlyOffice Integration Path Traversal Leading to Remote Code Execution via Unauthenticated…

CVE-2026-93643

Zimbra Collaboration Suite OnlyOffice Integration Path Traversal Leading to Remote Code Execution via Unauthenticated /downloadas Request PUBLISHED

Description (CNA)

When OnlyOffice/Document Editing is available, an unauthenticated remote attacker with access to an existing supported public Briefcase document can abuse unsigned save fields to perform path-traversal writes and execute commands as zimbra.

Affected (CNA)

Vendor / product	Versions
Zimbra / Zimbra Collaboration Suite (ZCS)	affected 0 before 10.1.21

CWE

CWE-22, CWE-863

References

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.