CVE-2025-34274CWE-250

CVE-2025-34274

Critical ยท published October 31, 2025

CVSS v3.1
9.8
EPSS
2%
Percentile
81.3
In the wild
Unconfirmed
What it is

๐Ÿ”ฅ A root-level vulnerability is lurking in Nagios Log Server versions prior to 2024R2.0.3! The embedded Logstash process runs as the root user, which is about as secure as letting a raccoon rummage through your trash โ€” it can create chaos! Think of this vulnerability like having a restaurant with a kitchen door that anyone can walk into โ€” if the chef isn't careful, a mischievous diner might sneak in and ruin the entire meal. Similarly, the Logstash service is exposed to untrusted input, and if compromised, it could lead to significant damage. An attacker could gain full control of your system, executing code with root privileges and potentially causing catastrophic damage. This means they could read sensitive data, modify configurations, or even disable your entire monitoring setup โ€” absolutely devastating!

Put simply

Think of this vulnerability like having a restaurant with a kitchen door that anyone can walk into โ€” if the chef isn't careful, a mischievous diner might sneak in and ruin the entire meal. Similarly, the Logstash service is exposed to untrusted input, and if compromised, it could lead to significant damage. This execution with unnecessary privileges vulnerability allows attackers to exploit the Logstash process running as root, leading to full system compromise through insecure plugins or configuration injections.

What to do

An attacker could gain full control of your system, executing code with root privileges and potentially causing catastrophic damage. This means they could read sensitive data, modify configurations, or even disable your entire monitoring setup โ€” absolutely devastating! Upgrade Nagios Log Server to version 2024R2.0.3 or later, where the Logstash service now runs under a lower-privileged 'nagios' user. Additionally, review and secure any plugins or input configurations you have in place to minimize risk. You've got this! Take these steps to secure your system and maintain your security hero status! ๐Ÿ›ก๏ธ

The record
Technical detail
CVSS v3.1
9.8 ยท CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02076 ยท 81.3th percentile
Weakness
CWE-250 ยท Execution with Unnecessary Privileges
Published
2025-10-31T02:15Z
Affected products (15)
ProductVersionsFixed in
nagios/log_server< 20242024
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nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
nagios/log_serverall versionsโ€”
References (3)
EPSS history
Timeline
  • 30 OCT 21:23Z
    Nagios Log Server < 2024R2.0.3 Logstash Process Root Privileges
    cvelistv5