What’s Vulnerable › Vulnerabilities
CVE-2023-24035
- Severity: low (CVSS 3.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-14 · updated 2026-09-22
- Weakness: CWE-208
Description
An issue was discovered in Nagios XI before 5.9.3. The is_insecure_login_authenticated function uses a insecure timing comparison that leads to an attacker being able to bruteforce the admin password, by measuring timing differences in the comparison.
Affected products
- Nagios XI: before 5.9.3 — fixed in 5.9.3
How to fix
Upgrade to a fixed version: Nagios XI 5.9.3. Check the vendor advisory for mitigations.
References
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