Critical severity · published Jul 6, 2023
CVE-2023-34192
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
In wildKEV
9.0
CVSS
77.3%
EPSS
Yes
On KEV
Description
Cross Site Scripting vulnerability in Zimbra ZCS v.8.8.15 allows a remote authenticated attacker to execute arbitrary code via a crafted script to the /h/autoSaveDraft function.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)77.3% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Feb 25, 2025
Federal remediation dueMar 18, 2025
Ransomware campaign useNot known
Affected products
Which versions
ZC
Zimbra Collaboration Suite · Synacor
8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; +34 more · source: NVD
ZC
Zimbra Collaboration Suite (ZCS) · Synacor
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-34192
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-34192
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
wiki.zimbra.com
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
wiki.zimbra.com
https://wiki.zimbra.com/wiki/Security_Center
wiki.zimbra.com
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy
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