CVE-2025-34135

Name: CVE-2025-34135
Creator: NVD / NIST
Published: 2025-10-30T22:15:47.12+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.1/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2025-34135 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. Nagios XI versions prior to 2024R1.4.2 configure some systemd unit files with permission sets that were too permissive. In particular, the nagios.service unit had executable permissions that were not required. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

Description

Nagios XI versions prior to 2024R1.4.2 configure some systemd unit files with permission sets that were too permissive. In particular, the nagios.service unit had executable permissions that were not required. Overly permissive permissions on service unit files can broaden local attack surface by enabling unintended execution behaviors or facilitating abuse of service operations when combined with other weaknesses.

Metrics

CVSS 3.1

4.4/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CVSS 4.0

5.1/10

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/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

EPSS Probability

0.30%

21.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions	Update
Nagios	Nagios Xi	< 2024	—
Nagios	Nagios Xi	2024	R1

References

https://www.nagios.com/changelog/nagios-xi/Release Notes
https://www.nagios.com/products/security/#nagios-xiVendor Advisory
https://www.vulncheck.com/advisories/nagios-xi-overly-permissive-permissions-on-systemd-unit-filesThird Party Advisory

Timeline

Published: Oct 30, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-34135?

How severe is CVE-2025-34135?

CVE-2025-34135 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2025-34135?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-34135?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST