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.
History

Wed, 17 Dec 2025 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 17 Dec 2025 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Nagios
Nagios nagios Xi
Nagios xi
Vendors & Products Nagios
Nagios nagios Xi
Nagios xi

Tue, 16 Dec 2025 22:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Nagios XI Privilege Escalation via Writable PHP Include Executed with Sudo
Weaknesses CWE-732
References
Metrics cvssV4_0

{'score': 8.6, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2025-12-18T04:55:16.774Z

Reserved: 2025-04-15T19:15:22.581Z

Link: CVE-2025-34288

cve-icon Vulnrichment

Updated: 2025-12-17T21:16:25.449Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-16T23:15:44.720

Modified: 2025-12-18T15:08:06.237

Link: CVE-2025-34288

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-17T14:28:52Z