CVE-2021-26105 Memory corruption in FortiSandbox
An authenticated attacker can execute unauthorized code via crafted HTTP requests due to a stack-based buffer overflow in the profile parser.
- 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-2021-26105?
CVE-2021-26105 is a medium-severity memory corruption vulnerability in Fortinet Fortisandbox, published on 24 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A stack-based buffer overflow vulnerability (CWE-121) in the profile parser of FortiSandbox version 3.2.2 and below, version 3.1.4 and below may allow an authenticated attacker to potentially execute unauthorized code or commands via specifically crafted HTTP requests.
Which versions are affected by CVE-2021-26105?
It affects 1 product.
Products include Fortinet Fortisandbox.
How do I fix CVE-2021-26105?
No fix has been published for CVE-2021-26105 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-26105 being exploited?
There is no known exploitation of CVE-2021-26105 in the wild and no public exploit code.
Other vulnerabilities in Fortinet Fortisandbox
Sources
Also known as GHSA-p7mf-j4fj-4rq3.