Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-34274

Severity CVSS v4.0:
CRITICAL
Type:
Unavailable / Other
Publication date:
30/10/2025
Last modified:
06/11/2025

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.

Impact

Vector 4.0
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 CVSS v4.0 Severity and Metrics:

Base Score: 9.30 CRITICAL
Vector: 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

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0
9.30
Severity 4.0
CRITICAL
Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:nagios:log_server:*:*:*:*:*:*:*:* 2024 (excluding)
cpe:2.3:a:nagios:log_server:2024:r1:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.0.1:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.0.2:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.1:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.2:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.3:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.3.1:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.3.2:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.3.3:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.3.4:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1.3.5:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r2:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r2.0.1:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r2.0.2:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools