High severity · published Jul 6, 2023
CVE-2023-34193
File Upload vulnerability in Zimbra ZCS 8.8.15 allows an authenticated privileged user to execute arbitrary code and obtain sensitive information via the ClientUploader function
8.8
CVSS
1.2%
EPSS
No
On KEV
Description
File Upload vulnerability in Zimbra ZCS 8.8.15 allows an authenticated privileged user to execute arbitrary code and obtain sensitive information via the ClientUploader function.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Collaboration · Zimbra
8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; +31 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-34193
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-34193
Release Notes
https://wiki.zimbra.com/wiki/Security_Center
Not Applicable
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy
Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
More from Collaboration
8.9
CVE-2026-73570
Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability
6.1
CVE-2025-66376
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting Vulnerability
6.1
CVE-2024-27443
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
9.8
CVE-2023-29382
An issue in Zimbra Collaboration ZCS v.8.8.15 and v.9.0 allows an attacker to execute arbitrary code via the sfdc_preauth.jsp component
9.8
CVE-2023-29381
An issue in Zimbra Collaboration (ZCS) v.8.8.15 and v.9.0 allows a remote attacker to escalate privileges and obtain sensitive information via the password and 2FA parameters