CVE-2025-34271: Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext

Published Oct 30, 2025
·
Updated

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.

Affected Software

15 affected components
Nagios Log Server<2024R2.0.2
Nagios Log Server<2024
Nagios Log Server=2024-r1
Nagios Log Server=2024-r1.0.1
Nagios Log Server=2024-r1.0.2
Nagios Log Server=2024-r1.1
Nagios Log Server=2024-r1.2
Nagios Log Server=2024-r1.3
Nagios Log Server=2024-r1.3.1
Nagios Log Server=2024-r1.3.2
Nagios Log Server=2024-r1.3.3
Nagios Log Server=2024-r1.3.4
Nagios Log Server=2024-r1.3.5
Nagios Log Server=2024-r2
Nagios Log Server=2024-r2.0.1

Remediation

Information

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."

Event History

Oct 30, 2025
CVE Published
via MITRE·09:22 PM
Data Sourced
via MITRE·09:22 PM
RemedyDescriptionWeakness
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2025-34271?

CVE-2025-34271 is considered a critical vulnerability due to the exposure of sensitive credentials over an unencrypted channel.

2

How do I fix CVE-2025-34271?

To fix CVE-2025-34271, upgrade Nagios Log Server to version 2024R2.0.2 or later.

3

What component of Nagios Log Server is affected by CVE-2025-34271?

CVE-2025-34271 affects the cluster manager component of Nagios Log Server.

4

What versions of Nagios Log Server are vulnerable to CVE-2025-34271?

Nagios Log Server versions prior to 2024R2.0.2 are vulnerable to CVE-2025-34271.

5

What type of attacks can exploit CVE-2025-34271?

Attackers can exploit CVE-2025-34271 to intercept sensitive credentials transmitted over an insecure channel.

Contact

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