Is CVE-2023-34192 actively exploited?

Yes. CVE-2023-34192 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2023-34192 be exploited remotely?

The attack vector of CVE-2023-34192 has not been classified yet.

What is the CVSS score of CVE-2023-34192?

CVE-2023-34192 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2023-34192

HIGHCISA KEVIN THE WILD

CVE-2023-34192

Published: February 25, 2025

EPSS:89.03%probability of exploitation in 30 daysPercentile:99.5th

Official Description

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting (XSS) vulnerability that allows a remote authenticated attacker to execute arbitrary code via a crafted script to the /h/autoSaveDraft function.

NVD Source

CISA KEV Advisory

Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability

Added to KEV: 2025-02-25Federal patch deadline: 2025-03-18

Required Action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Risk Analysis

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting (XSS) vulnerability that allows a remote authenticated attacker to execute arbitrary code. This is a critical flaw given its high EPSS score of 0.89029, indicating a very high likelihood of exploitation, and its presence in CISA's KEV catalog confirms it has been actively exploited.

This vulnerability has been actively exploited in the wild. Authenticated attackers can remotely execute code via crafted scripts.

Recommended Action

Apply all available security updates for Synacor Zimbra Collaboration Suite (ZCS). Implement strong input validation and output encoding to prevent XSS attacks.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-34192 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2023-34192 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.