CVE-2025-34271
Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext
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.
INFO
Published Date :
Oct. 30, 2025, 10:15 p.m.
Last Modified :
Nov. 6, 2025, 4:29 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Nagios Log Server to version 2024R2.0.2 or later.
- Ensure SSL/TLS is enabled for all communications.
- Monitor network traffic for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-34271.
| URL | Resource |
|---|---|
| https://www.nagios.com/changelog/#log-server | Release Notes |
| https://www.nagios.com/products/security/#log-server-2024R2 | Vendor Advisory |
| https://www.vulncheck.com/advisories/nagios-log-server-cluster-manager-credential-requests-sent-over-plaintext | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-34271 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-34271
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-34271 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-34271 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Nov. 06, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:nagios:log_server:2024:r1.3.1:*:*:*:*:*:* *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:r1.3.2:*:*:*:*:*:* *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:*:*:*:*:*:*:*:* versions up to (excluding) 2024 Added Reference Type VulnCheck: https://www.nagios.com/changelog/#log-server Types: Release Notes Added Reference Type VulnCheck: https://www.nagios.com/products/security/#log-server-2024R2 Types: Vendor Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/nagios-log-server-cluster-manager-credential-requests-sent-over-plaintext Types: Third Party Advisory -
New CVE Received by [email protected]
Oct. 30, 2025
Action Type Old Value New Value 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-319 Added Reference https://www.nagios.com/changelog/#log-server Added Reference https://www.nagios.com/products/security/#log-server-2024R2 Added Reference https://www.vulncheck.com/advisories/nagios-log-server-cluster-manager-credential-requests-sent-over-plaintext