CVE-2025-34288Nagios XI Privilege Escalation via Writable PHP Include Executed with Sudo
Updated under an hour ago ()
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It affects Nagios Enterprises Nagios XI and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Nagios XI versions prior to 2026R1.1 are vulnerable to local privilege escalation due to an unsafe interaction between sudo permissions and application file permissions. A user‑accessible maintenance script may be executed as root via sudo and includes an application file that is writable by a lower‑privileged user. A local attacker with access to the application account can modify this file to introduce malicious code, which is then executed with elevated privileges when the script is run. Successful exploitation results in arbitrary code execution as the root user.
- CVSS
- 8.6 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-732
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Analyzed
- Record last updated
- May 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Nagios Enterprises Nagios XI nagios_enterprises:nagios_xi (from the name) | before 2026R1.1 | CNA record |
nagios nagios_xi nagios:nagios_xi | through 2024; 2026; 2026 | NVD |
References
- https://www.nagios.com/changelog/nagios-xi/2026r1-1/release-notes, patch
- https://www.vulncheck.com/advisories/nagios-xi-privilege-escalation-via-writable-php-include-executed-with-sudothird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.