CVE-2023-24035

3.5 lowEPSS 0.7%

Low (3.5). EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

3.5 low

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
CWE: CWE-208
Published: 2026-09-14
Modified: 2026-09-22
Record from: the NVD, synced 2026-10-19

References

https://www.nagios.com/downloads/nagios-xi/change-log/
https://www.nagios.com/security-disclosures/

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