What is CVE-2025-34287?

CVE-2025-34287 is a high-severity vulnerability in Nagios Nagios_xi, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2025-10-30.

How severe is CVE-2025-34287?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Nagios Nagios_xi

CVE-2025-34287

Nagios XI versions prior to 2024R2 contain an improperly owned script, process_perfdata.pl, which is executed periodically as the nagios user but owned by www-data. Because the file was writable by www-data, an attacker with web server pri…

EPSS: 0.003 (17.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Nagios Nagios_xi — versions 2024
Nagios Xi — versions 0

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

disclosure@vulncheck.com (release-notes, Release Notes, patch)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2025-34287?: CVE-2025-34287 is a high-severity vulnerability in Nagios Nagios_xi, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2025-10-30.
How severe is CVE-2025-34287?: High severity. CVSS v3 base score is 7.8 out of 10.