CVE-2025-34288
HIGH EPSS 75.2%
Published Dec 16, 20256mo ago · Modified Jun 17, 20261w ago
8.6 CVSS 4.0
Published Dec 16, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
75.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-732
Affected Products 3
References 2
- nagios.com https://www.nagios.com/changelog/nagios-xi/2026r1-1/
- vulncheck.com https://www.vulncheck.com/advisories/nagios-xi-privilege-escalation-via-writable-php-include-executed-with-sudo
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.