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.
References
| Link | Resource |
|---|---|
| https://www.nagios.com/changelog/nagios-xi/2026r1-1/ | Release Notes |
| https://www.vulncheck.com/advisories/nagios-xi-privilege-escalation-via-writable-php-include-executed-with-sudo | Third Party Advisory |
Configurations
Configuration 1 (hide)
|
History
24 Dec 2025, 17:57
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:* cpe:2.3:a:nagios:nagios_xi:2026:r1:*:*:*:*:*:* cpe:2.3:a:nagios:nagios_xi:2026:r1.0.1:*:*:*:*:*:* |
|
| References | () https://www.nagios.com/changelog/nagios-xi/2026r1-1/ - Release Notes | |
| References | () https://www.vulncheck.com/advisories/nagios-xi-privilege-escalation-via-writable-php-include-executed-with-sudo - Third Party Advisory | |
| First Time |
Nagios nagios Xi
Nagios |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.7 |
16 Dec 2025, 23:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-12-16 23:15
Updated : 2025-12-24 17:57
NVD link : CVE-2025-34288
Mitre link : CVE-2025-34288
CVE.ORG link : CVE-2025-34288
JSON object : View
Products Affected
nagios
- nagios_xi
CWE
CWE-732
Incorrect Permission Assignment for Critical Resource