CVE-2025-34271CWE-319

CVE-2025-34271

Critical · published October 31, 2025

CVSS v3.1
9.8
EPSS
1%
Percentile
54.2
In the wild
Unconfirmed
What it is

⚡ Nagios Log Server before version 2024R2.0.2 is leaking secrets! An attacker on the network can intercept sensitive credentials sent over an unencrypted channel, even with SSL/TLS enabled. 🔥 Think of it like sending a postcard with your password written on it instead of a sealed envelope — anyone along the route can read it! The credentials are exposed as they travel, allowing attackers to peek into your sensitive conversations. This means an intruder could snag credentials in transit and authenticate as a cluster node or service account, paving the way for unauthorized access. The fallout? They could potentially move laterally through your systems, compromising sensitive data and services. Talk about a security nightmare!

Put simply

Think of it like sending a postcard with your password written on it instead of a sealed envelope — anyone along the route can read it! The credentials are exposed as they travel, allowing attackers to peek into your sensitive conversations. This vulnerability arises from the cluster manager component in Nagios Log Server that fails to secure credential requests over an unencrypted channel, even when SSL/TLS is configured. As a result, an attacker on the network path can intercept these sensitive credentials during transmission.

What to do

This means an intruder could snag credentials in transit and authenticate as a cluster node or service account, paving the way for unauthorized access. The fallout? They could potentially move laterally through your systems, compromising sensitive data and services. Talk about a security nightmare! To protect yourself, upgrade Nagios Log Server to version 2024R2.0.2 or later immediately. Additionally, ensure that all connections are using secure channels for sensitive data transmission. Don't forget to audit your network to identify any potential interception points! You've got this! By taking these steps, you’ll fortify your defenses in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00744 · 54.2th percentile
Weakness
CWE-319 · Cleartext Transmission of Sensitive Information
Published
2025-10-31T02:15Z
Affected products (14)
ProductVersionsFixed in
nagios/log_server< 20242024
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References (3)
EPSS history
Timeline
  • 30 OCT 21:22Z
    Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext
    cvelistv5