CVE-2025-34287 Details
Description
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 privileges could modify its contents, leading to arbitrary code execution as the nagios user when the script is next run. This improper ownership and permission configuration enables local privilege escalation.
A privilege escalation vulnerability has been identified in Nagios XI versions prior to 2024R2. The issue arises from the process_perfdata.pl script, which is executed periodically as the nagios user but is owned by www-data. This improper ownership allows an attacker with web server privileges to modify the script's contents. When the script is executed, it can lead to arbitrary code execution as the nagios user, exploiting the flawed ownership and permission configuration.
Users can upgrade to Nagios XI version 2024R2 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Oct 31, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.nagios.com/changelog/nagios-xi/ | [email protected] | Release Notes |
| https://www.vulncheck.com/advisories/nagios-xi-privilege-escalation-via-improperly-owned-script | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-732 | Incorrect Permission Assignment for Critical Resource | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| nagios nagios xi | < 2024 2024 r1 2024 r1.0.1 2024 r1.0.2 2024 r1.1 2024 r1.1.1 2024 r1.1.2 2024 r1.1.3 2024 r1.1.4 2024 r1.1.5 2024 r1.2 2024 r1.2.1 2024 r1.2.2 2024 r1.3 2024 r1.3.1 2024 r1.3.2 2024 r1.3.3 2024 r1.3.4 2024 r1.4 2024 r1.4.1 2024 r1.4.2 2024 r1.4.3 2024 r1.4.4 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Nov 6, 2025 | Initial Analysis | [email protected] |
| Oct 30, 2025 | New CVE Received | [email protected] |