Security News > 2023 > June > Fortinet fixes critical RCE flaw in Fortigate SSL-VPN devices, patch now
Fortinet has released new Fortigate firmware updates that fix an undisclosed, critical pre-authentication remote code execution vulnerability in SSL VPN devices.
While not mentioned in the release notes, security professionals and admins have hinted that the updates quietly fixed a critical SSL-VPN RCE vulnerability that would be disclosed on Tuesday, June 13th, 2023.
Fortinet is known to push out security patches prior to disclosing critical vulnerabilities to give customers time to update their devices before threat actors reverse engineer the patches.
Today, additional information was disclosed by vulnerability researcher Charles Fol, who told BleepingComputer that the new FortiOS updates include a fix for a critical RCE vulnerability discovered by him and Rioru.
Fol confirmed to BleepingComputer that this should be considered an urgent patch for Fortinet admins as its likely to be quickly analyzed and discovered by threat actors.
Fortinet devices are some of the most popular firewall and VPN devices in the market, making them a popular target for attacks.
News URL
Related news
- SonicWall firewalls now under attack: Patch ASAP or risk intrusion via your SSL VPN (source)
- Critical Veeam Backup & Replication RCE vulnerability fixed, patch ASAP! (CVE-2025-23120) (source)
- Netgear warns users to patch critical WiFi router vulnerabilities (source)
- Critical RCE bug in Microsoft Outlook now exploited in attacks (source)
- SonicWall firewall exploit lets hackers hijack VPN sessions, patch now (source)
- MITRE Caldera RCE vulnerability with public PoC fixed, patch ASAP! (CVE-2025–27364) (source)
- Critical PHP RCE vulnerability mass exploited in new attacks (source)
- Choose your own Patch Tuesday adventure: Start with six zero day fixes, or six critical flaws (source)
- Critical RCE flaw in Apache Tomcat actively exploited in attacks (source)
- Infoseccers criticize Veeam over critical RCE vulnerability and a failing blacklist (source)