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ZC
Product
Zimbra Collaboration Suite (ZCS)
by Synacor · last CVE Aug 13, 2026
On CISA KEVExploited in the wildRansomware-linked
18
CVEs
17
On KEV
9.8
Max CVSS
0
New 30D
Vulnerabilities18In the news12Timeline
Severity mix
Critical 5High 6Medium 7Low 0
Severity
All severities18Critical5High6Medium7Low0
Exploitation
On CISA KEV17Exploited in the wild17
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2025-66376
In wildKEV
6.1
20%
Jan 5
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting Vulnerability
Affected: All versions, or not specified
CVE-2025-48700
In wildKEV
6.1
2%
Jun 23
Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability
Affected: All versions, or not specified
CVE-2024-27443
In wildKEV
6.1
25%
Aug 12
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Affected: All versions, or not specified
CVE-2023-37580
In wildKEV
6.1
49%
Jul 31
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Affected: All versions, or not specified
CVE-2022-27926
In wildKEV
6.1
18%
Apr 20
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Affected: All versions, or not specified
CVE-2018-6882
RansomwareIn wildKEV
6.1
30%
Mar 27
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Affected: All versions, or not specified
CVE-2025-27915
In wildKEV
5.4
4%
Mar 12
Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability
Affected: All versions, or not specified
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