Disclosure summary
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.
Source-reported weakness categories
CWE-732
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2025-34287
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| nagios | nagios_xi | * {"versionEndExcluding":"2024"} |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
| nagios | nagios_xi | 2024 |
Original records & references
- NIST NVD record
- CVE Program record
- www.nagios.com — Release Notes
- www.vulncheck.com — Third Party Advisory
PUBLISHED 2025-10-30T18:15:49-04:00
MODIFIED 2026-10-07T17:10:00-04:00
INGESTED 2026-10-08T12:35:14-04:00