Home › Exploited CVEs › CVE-2023-34192
CVE-2023-34192: Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Synacor Zimbra Collaboration Suite (ZCS) · in CISA KEV since 2025-02-25
2025-02-25added to KEV
2025-03-18federal remediation due date
77.27%EPSS exploit probability (30 days) 99.5th percentile
9 CRITICALCVSS 3.1
Unknownknown ransomware use
600days from NVD publication to KEV
What it is
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.
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.
| CWE | CWE-79 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| NVD published | 2023-07-06 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2023-34192.json · all KEV CVEs
Kevscope: daily CISA KEV + EPSS datasetThe whole KEV catalog joined with daily EPSS and CVSS scores as CSV/Parquet, refreshed daily. Free to download.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.