CVE-2025-34274

CRITICAL EPSS 77.0%
Published Oct 30, 20258mo ago · Modified Jun 17, 20261w ago
9.3 CVSS 4.0
Critical
Find Similar
Published Oct 30, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
9.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
77.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-250

Affected Products 15

VendorProductVersionRange
nagioslog_server* <2024
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any
nagioslog_server2024any

References 3

  • nagios.com https://www.nagios.com/changelog/#log-server
    Release Notes
  • nagios.com https://www.nagios.com/products/security/#log-server-2024R2
    Vendor Advisory
  • vulncheck.com https://www.vulncheck.com/advisories/nagios-log-server-logstash-process-root-privileges
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.