CVE-2025-34271

Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext

Published Oct 30, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the cluster manager component when requesting sensitive credentials from peer nodes over an unencrypted channel even when SSL/TLS is enabled in the product configuration. As a result, an attacker positioned on the network path can intercept credentials in transit. Captured credentials could allow the attacker to authenticate as a cluster node or service account, enabling further unauthorized access, lateral movement, or system compromise.

Remediation

Vendor Solution

Nagios addresses this vulnerability as "There was an issue in Nagios Log Server where requests for credentials from a cluster manager would not use SSL, even if SSL was enabled" and "Fixed issue with requesting credentials from a cluster manager wouldn’t use SSL if enabled."

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:nagios:log_server:2024:*:*:*:*:*:*:*
Type Values Removed Values Added
CPEs cpe:2.3:a:nagios:log_server:*:*:*:*:*:*:*:*
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:r1.3.1:*:*:*:*:*:*
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:r1.3:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r1:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r2.0.1:*:*:*:*:*:*
cpe:2.3:a:nagios:log_server:2024:r2:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Nagios
Nagios log Server
Vendors & Products Nagios
Nagios log Server
Type Values Removed Values Added
Description Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the cluster manager component when requesting sensitive credentials from peer nodes over an unencrypted channel even when SSL/TLS is enabled in the product configuration. As a result, an attacker positioned on the network path can intercept credentials in transit. Captured credentials could allow the attacker to authenticate as a cluster node or service account, enabling further unauthorized access, lateral movement, or system compromise.
Title Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext
Weaknesses CWE-319
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 17, 2025, 9:36 PM
Reserved
Apr 15, 2025, 7:15 PM
Status
Analyzed
Published
Oct 30, 2025, 10:15 PM
Modified
Oct 7, 2026, 9:10 PM