CVE-2023-47539 Auth bypass in FortiMail
Remote unauthenticated attackers can bypass admin login in FortiMail when RADIUS and remote_wildcard are enabled, gaining administrative privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-47539?
CVE-2023-47539 is a critical authentication bypass vulnerability in Fortinet FortiMail, published on 18 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An improper access control vulnerability in FortiMail version 7.4.0 configured with RADIUS authentication and remote_wildcard enabled may allow a remote unauthenticated attacker to bypass admin login via a crafted HTTP request.
Weakness: CWE-284
Which versions are affected by CVE-2023-47539?
It affects 1 product.
Products include Fortinet Fortimail.
How do I fix CVE-2023-47539?
No fix has been published for CVE-2023-47539 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-47539 being exploited?
There is no known exploitation of CVE-2023-47539 in the wild and no public exploit code.
Other vulnerabilities in Fortinet FortiMail
Sources
Also known as GHSA-52gf-54f2-3825.