RCE in Nagios Log Server
CVE-2025-34322
Nagios Log Server versions prior to 2026R1.0.1 contain an authenticated command injection vulnerability in the experimental 'Natural Language Queries' feature. When this feature is configured, certain user-controlled settings—including model selection and connection parameters—are read from the global configuration and concatenated into a shell command that is executed via shell_exec() without proper input handling or command-line argument sanitation. An authenticated user with access to the 'Global Settings' page can supply crafted values in these fields to inject additional shell commands, resulting in arbitrary command execution as the 'www-data' user and compromise of the Log Server host.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.095 (95.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.094 · newest: 0.095 · change: +0.001
Affected products
- Nagios Log Server — versions 0
- Nagios Log Server — versions 2026
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.nagios.com/products/security/ (vendor-advisory, patch, Vendor Advisory)
- www.nagios.com/changelog/nagios-log-server/nagios-log-server-2026r1-0-1/ (release-notes, Release Notes, patch)
- www.vulncheck.com/advisories/nagios-log-server-authenticated-command-injection-… (Third Party Advisory, third-party-advisory)
- theyhack.me/Rooting-Nagios-Log-Server/ (technical-description, exploit)
Frequently asked questions
- What is CVE-2025-34322?
- CVE-2025-34322 is a high-severity vulnerability in Nagios Log Server, classified under OS Command Injection. CVSS score: 7.2/10. Published 2025-11-17.
- How severe is CVE-2025-34322?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2025-34322 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.