CVE-2021-36186 Memory corruption in Fortinet FortiWeb
Attackers can execute unauthorized code or commands on Fortinet FortiWeb devices by sending crafted HTTP requests due to a stack-based buffer overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-36186?
CVE-2021-36186 is a high-severity memory corruption vulnerability in Fortinet Fortiweb, published on 2 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A stack-based buffer overflow in Fortinet FortiWeb version 6.4.0, version 6.3.15 and below, 6.2.5 and below allows attacker to execute unauthorized code or commands via crafted HTTP requests
Weakness: CWE-787
Which versions are affected by CVE-2021-36186?
It affects 1 product.
Products include Fortinet Fortiweb.
How do I fix CVE-2021-36186?
No fix has been published for CVE-2021-36186 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-2021-36186 being exploited?
There is no known exploitation of CVE-2021-36186 in the wild and no public exploit code.
Other vulnerabilities in Fortinet Fortiweb
Sources
Also known as GHSA-rv4v-vfgf-hg84.