AUGUST 4, 2026
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Case File

CVE-2025-39663

HIGH · CVSS 8.4 EPSS 0.56% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-10-30 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.4. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2025-39663
Severity
HIGH
CVSS
8.4
EPSS
0.56%

Original NVD Description

Cross-Site Scripting (XSS) vulnerability in Checkmk's distributed monitoring allows a compromised remote site to inject malicious HTML code into service outputs in the central site. Affecting Checkmk before 2.4.0p14, 2.3.0p39, 2.2.0 and 2.1.0 (eol).

Related CVEs

Other vulnerabilities affecting the same vendor(s)