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CVE-2022-24682: Synacor Zimbra Collaborate Suite (ZCS) Cross-Site Scripting Vulnerability

criticalknown exploitedpublic exploitCVE-2022-24682
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting (XSS) vulnerability in the Calendar feature that allows an attacker to execute arbitrary code.

CSIRTS triage

vendor: Synacorproduct: Zimbra Collaboration SuiteCross-site scripting
What
A cross-site scripting (XSS) vulnerability in the Calendar feature allows an attacker to execute arbitrary code.
Who is affected
Users of Synacor Zimbra Collaboration Suite (ZCS).
Urgency
Remediation is urgent as the vulnerability is actively exploited and critical.
Action
Patch Zimbra Collaboration Suite to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-02-25
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-24682

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2022-24682coverage & exploitation statusNVD · CVE.org

Recent advisories for Synacor Zimbra Collaborate

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CISA Known Exploited Vulnerabilities