CVE-2025-34274Network attack vector

Root code execution via privileged Logstash process

Published Oct 30, 2025 · Updated Nov 17, 2025

Execution with unnecessary privileges in Nagios Log Server before 2024R2.0.3 allows remote attackers to gain root code execution. The embedded Logstash service is launched as root rather than a dedicated lower-privileged account while accepting untrusted input and plugins. Compromise through an insecure plugin, injected pipeline configuration, or input-parsing flaw grants full control of the host.

CVSS severity9.3
Critical
EPSS probability1.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Execution with unnecessary privileges in Nagios Log Server before 2024R2.0.3 allows remote attackers to gain root code execution. The embedded Logstash service is launched as root rather than a dedicated lower-privileged account while accepting untrusted input and plugins. Compromise through an insecure plugin, injected pipeline configuration, or input-parsing flaw grants full control of the host.

The record

CVE
CVE-2025-34274
Published
Oct 30, 2025
Updated
Nov 17, 2025
Vendor
Nagios Enterprises, LLC
Product
Nagios Log Server
Classifications
CWE-250
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2024R2.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nagios Enterprises, LLC · Nagios Log Serverversion=0 <2024R2.0.3

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-250Execution with Unnecessary Privileges

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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