CVE-2023-24035 Information disclosure in Nagios XI
Attackers can brute-force admin passwords by measuring timing differences in authentication checks, leading to unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-24035?
CVE-2023-24035 is a low-severity vulnerability in Nagios XI, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-208
Which versions are affected by CVE-2023-24035?
How do I fix CVE-2023-24035?
No fix has been published for CVE-2023-24035 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-24035 being exploited?
There is no known exploitation of CVE-2023-24035 in the wild and no public exploit code.
Sources
Also known as GHSA-4w2r-vx7w-6p4w.