CVE-2026-39975 Combodo iTop: Remote code execution using external auth variable value
Unauthenticated attackers can delete a protection file to achieve remote code execution in Combodo iTop ITSM instances.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-39975?
CVE-2026-39975 is a critical code injection vulnerability in Combodo iTop, published on 24 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Combodo iTop is a web-based IT service management tool. Prior to 3.2.3, unauthenticated users could delete the .readonly file on iTop instances, leading to code execution. This file, created during the setup process, prevents users from performing write actions. This issue has been fixed in version 3.2.3.
Weakness: CWE-94
Which versions are affected by CVE-2026-39975?
How do I fix CVE-2026-39975?
No fix has been published for CVE-2026-39975 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-39975 being exploited?
There is no known exploitation of CVE-2026-39975 in the wild and no public exploit code.
Sources
Also known as GHSA-h823-537c-xwfh.