What’s Vulnerable › Vulnerabilities

CVE-2025-34277: Nagios Log Server < 2024R1.3.1 RCE via Malformed Dashboard ID

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-30 · updated 2026-10-07
• Weakness: CWE-94

Description

Nagios Log Server versions prior to 2024R1.3.1 contain a code injection vulnerability where malformed dashboard ID values are not properly validated before being forwarded to an internal API. An attacker able to supply crafted dashboard ID values can cause the system to execute attacker-controlled data, leading to arbitrary code execution in the context of the Log Server process.

Affected products

• Nagios Log Server: before 2024; 2024-r1, 2024-r1.0.1, 2024-r1.0.2, 2024-r1.1, 2024-r1.2, 2024-r1.3 — fixed in 2024

How to fix

Upgrade to a fixed version: Nagios Log Server 2024. Check the vendor advisory for mitigations.

References

• https://www.nagios.com/changelog/#log-server-2024R1
• https://www.nagios.com/products/security/#log-server
• https://www.vulncheck.com/advisories/nagios-log-server-rce-via-malformed-dashboard-id

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