Is CVE-2025-34271 actively exploited?

No active exploitation of CVE-2025-34271 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-34271 be exploited remotely?

Yes. CVE-2025-34271 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-34271?

CVE-2025-34271 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2025-34271

CWE-319Published: October 30, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Risk Analysis

This critical vulnerability in Nagios Log Server versions prior to 2024R2.0.2 allows for the interception of sensitive credentials. The cluster manager component requests credentials over an unencrypted channel even when SSL/TLS is enabled, making them vulnerable to network eavesdropping. The CVSS score of 9.8 indicates a severe risk.

There is no public exploit known for this vulnerability. Given its network attack vector and low attack complexity, it is remotely exploitable without user interaction.

Recommended Action

Nagios Log Server users should upgrade to version 2024R2.0.2 or later to ensure all credential exchanges are properly encrypted. Implement network segmentation and encryption for all sensitive internal communications.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2025-34271 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.