CVE-2023-34192
Actively exploited. CVE-2023-34192 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-02-25) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2023-34192 is indexed in Nuclei. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
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.
CSIRTS triage
- What
- The vulnerability allows a remote authenticated attacker to execute arbitrary code via a crafted script.
- Who is affected
- Authenticated users of Synacor Zimbra Collaboration Suite (ZCS) are affected.
- Urgency
- Remediation is critical due to active exploitation and the severity of the vulnerability.
- Action
- Implement the recommended security updates for Zimbra Collaboration Suite.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2023-34192 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- NucleiA nuclei-templates detection/PoC template exists for this CVE.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2023-34192: Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerabilitycisa-kev · 2025-02-25
External references
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[](https://www.csirts.com/cve/CVE-2023-34192)