Vulnerability intelligence

CVE-2025-68645

Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability

Synacor Zimbra Collaboration Suite (ZCS)

A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and 10.1 because of improper handling of user-supplied request parameters in the RestFilter servlet. An unauthenticated remote attacker can craft requests to the /h/rest endpoint to influence internal request dispatching, allowing inclusion of arbitrary files from the WebRoot directory.

CVSS Score

—

Unrated

EPSS — Exploit Probability

49%

Riskier than 99% of all CVEs · checked 2026-09-06

Exploitation

Confirmed in the wild

KEV since 2026-01-22

Remediation

Unconfirmed

Federal deadline 2026-02-12

CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Deadline for federal agencies: 2026-02-12.

NVD entry CISA KEV

4 articles across 4 outlets · first covered Jan 23, 2026 · latest Jan 23, 2026

Coverage timeline

CISA Updates KEV Catalog with Four Actively Exploited Software Vulnerabilities
thehackernews.com · Jan 23, 2026
U.S. CISA adds Prettier eslint-config-prettier, Vite Vitejs, Versa Concerto SD-WAN orchestration platform, and Synacor Zimbra Collaboration Suite flaws to its Known Exploited Vulnerabilities catalog
securityaffairs.com · Jan 23, 2026
Organizations Warned of Exploited Zimbra Collaboration Vulnerability
www.securityweek.com · Jan 23, 2026
CISA Adds 4 Critical Flaws to “Must-Patch” List as Exploits Surge
securityonline.info · Jan 23, 2026

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