CVE-2025-34323 Nagios Log Server < 2026R1.0.1 Local Privilege Escalation via Writable Scripts and Sudo Rules
Local attackers can escalate privileges to root by replacing writable scripts executed via sudo, leading to full system compromise.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-34323?
CVE-2025-34323 is a high-severity vulnerability in Nagios Log Server, published on 17 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Nagios Log Server versions prior to 2026R1.0.1 are vulnerable to local privilege escalation due to a combination of sudo misconfiguration and group-writable application directories. The 'www-data' user is a member of the 'nagios' group, which has write access to '/usr/local/nagioslogserver/scripts', while several scripts in this directory are owned by root and may be executed via sudo without a password. A local attacker running as 'www-data' can move one of these root-owned scripts to a backup name and create a replacement script with attacker-controlled content at the original path, then invoke it with sudo. This allows arbitrary commands to be executed with root privileges, providing full compromise of the underlying operating system.
Weakness: CWE-732
Which versions are affected by CVE-2025-34323?
It affects 1 product.
Products include Nagios Log Server.
How do I fix CVE-2025-34323?
No fix has been published for CVE-2025-34323 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-34323 being exploited?
There is no known exploitation of CVE-2025-34323 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-2025-34271 Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext
Sources
Also known as GHSA-m97c-3wp7-wp45.