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CVE-2025-34271

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

Published: Oct 30, 2025Updated: Nov 6, 2025 Sources: CVE List NVD BDUCWE-319
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.6%
Top 55.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-319

Affected Products

log servernagios
On-prem
Enterprise Software / itsm-monitoring
Nagios Log ServerNagios Enterprises LLC
On-prem
Enterprise Software / itsm-monitoring
Log ServerNagios
On-prem
Enterprise Software / itsm-monitoring
nagioscommercialUSEnterprise Softwareaka nagios xi
nagios enterprises llccommercialUSEnterprise Softwareaka nagios xi, nagios log server, nagios fusion

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Credential Access
View detailed technique mapping

References

https://www.nagios.com/changelog/#log-server
nagios.com
https://www.nagios.com/products/security/#log-server-2024R2
nagios.com
https://www.vulncheck.com/advisories/nagios-log-server-cluster-manager-credential-requests-sent-over-plaintext
vulncheck.com

Timeline

Published
Oct 30, 2025
Last Updated
Nov 6, 2025

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