CVE-2025-34271 Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext
Attackers can intercept cluster manager credentials sent over plaintext, enabling unauthorized access and lateral movement in Nagios Log Server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-34271?
CVE-2025-34271 is a high-severity vulnerability in Nagios Log Server, published on 30 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-319
Which versions are affected by CVE-2025-34271?
It affects 1 product.
Products include Nagios Log Server.
How do I fix CVE-2025-34271?
No fix has been published for CVE-2025-34271 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-34271 being exploited?
There is no known exploitation of CVE-2025-34271 in the wild and no public exploit code.
Other vulnerabilities in Nagios Log Server
- CVE-2025-44823 Information disclosure in Log Server
- CVE-2025-34277 Nagios Log Server < 2024R1.3.1 RCE via Malformed Dashboard ID
- CVE-2025-34274 Nagios Log Server < 2024R2.0.3 Logstash Process Root Privileges
- CVE-2023-7322 Nagios Log Server < 2024R1 Incorrect Authorization Granting Full API Access
- CVE-2025-34298 Nagios Log Server < 2024R1.3.2 Set Email Privilege Escalation
Sources
Also known as GHSA-3wc8-676p-crj6.