CVE-2025-34274 Nagios Log Server < 2024R2.0.3 Logstash Process Root Privileges

What is CVE-2025-34274?

CVE-2025-34274 is a critical vulnerability in Nagios Log Server, published on 30 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Nagios Log Server versions prior to 2024R2.0.3 contain an execution with unnecessary privileges vulnerability as it runs its embedded Logstash process as the root user. If an attacker is able to compromise the Logstash process - for example by exploiting an insecure plugin, pipeline configuration injection, or a vulnerability in input parsing - the attacker could execute code with root privileges, resulting in full system compromise. The Logstash service has been altered to run as the lower-privileged 'nagios' user to reduce this risk associated with a network-facing service that can accept untrusted input or load third-party components.

Weakness: CWE-250

Which versions are affected by CVE-2025-34274?

It affects 1 product.

Products include Nagios Log Server.

How do I fix CVE-2025-34274?

No fix has been published for CVE-2025-34274 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-34274 being exploited?

There is no known exploitation of CVE-2025-34274 in the wild and no public exploit code.

Other vulnerabilities in Nagios Log Server

• CVE-2025-44823 Information disclosure in Log Server Critical 9.9
• CVE-2025-34277 Nagios Log Server < 2024R1.3.1 RCE via Malformed Dashboard ID Critical 9.4
• CVE-2023-7322 Nagios Log Server < 2024R1 Incorrect Authorization Granting Full API Access High 8.7
• CVE-2025-34271 Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext High 8.7
• CVE-2025-34298 Nagios Log Server < 2024R1.3.2 Set Email Privilege Escalation High 8.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-fmr7-xm73-cwcf.