Fortinet
Critical Fortinet flaws now exploited in Qilin ransomware attacks
The Qilin ransomware operation has recently joined attacks exploiting two Fortinet vulnerabilities that allow bypassing authentication on vulnerable devices and executing malicious code remotely. Qilin (also tracked as Phantom Mantis) surfaced in August 2022 as a Ransomware-as-a-Service (RaaS) operation under the “Agenda” name and has since claimed responsibility for over 310 victims on its dark […]
Fortinet fixes critical zero-day exploited in FortiVoice attacks
Fortinet released security updates to patch a critical remote code execution vulnerability exploited as a zero-day in attacks targeting FortiVoice enterprise phone systems. The security flaw is a stack-based overflow vulnerability tracked as CVE-2025-32756 that also impacts FortiMail, FortiNDR, FortiRecorder, and FortiCamera. As the company explains in a security advisory issued on Tuesday, successful exploitation can allow […]
Over 16,000 Fortinet devices compromised with symlink backdoor
Over 16,000 internet-exposed Fortinet devices have been detected as compromised with a new symlink backdoor that allows read-only access to sensitive files on previously compromised devices. This exposure is being reported by threat monitoring platform The Shadowserver Foundation, which initially reported 14,000 devices were exposed. Today, Shadowserver’s Piotr Kijewski told GeekFeed that the cybersecurity organization […]
Fortinet: Hackers retain access to patched FortiGate VPNs using symlinks
Fortinet warns that threat actors use a post-exploitation technique that helps them maintain read-only access to previously compromised FortiGate VPN devices even after the original attack vector was patched. Earlier this week, Fortinet began sending emails to customers warning that their FortiGate/FortiOS devices were compromised based on telemetry received from FortiGuard devices. These emails were […]
Critical FortiSwitch flaw lets hackers change admin passwords remotely
Fortinet has released security patches for a critical vulnerability in its FortiSwitch devices that can be exploited to change administrator passwords remotely. The company says Daniel Rozeboom of the FortiSwitch web UI development team discovered the vulnerability (CVE-2024-48887) internally. Unauthenticated attackers can exploit this unverified FortiSwitch GUI password change security flaw (rated with a 9.8/10 […]
Fortinet discloses second firewall auth bypass patched in January
Furthermore, even though today’s updated advisory indicates that both flaws were exploited in attacks and even includes a workaround for the new CSF proxy requests exploitation pathway, Fortinet says that only CVE-2024-55591 was exploited. Fortinet told GeekFeed that if a customer previously upgraded based on the guidance in FG-IR-24-535 / CVE-2024-55591, then they are already protected against the […]
Hackers leak configs and VPN credentials for 15,000 FortiGate devices
A new hacking group has leaked the configuration files, IP addresses, and VPN credentials for over 15,000 FortiGate devices for free on the dark web, exposing a great deal of sensitive technical information to other cybercriminals. The data was leaked by the “Belsen Group,” a new hacking group first appearing on social media and cybercrime […]
Fortinet warns of auth bypass zero-day exploited to hijack firewalls
Attackers are exploiting a new authentication bypass zero-day vulnerability in FortiOS and FortiProxy to hijack Fortinet firewalls and breach enterprise networks. This security flaw (tracked as CVE-2024-55591) impacts FortiOS 7.0.0 through 7.0.16, FortiProxy 7.0.0 through 7.0.19, and FortiProxy 7.2.0 through 7.2.12. Successful exploitation allows remote attackers to gain super-admin privileges by making malicious requests to the […]
Fortinet warns of FortiWLM bug giving hackers admin privileges
Fortinet has disclosed a critical vulnerability in Fortinet Wireless Manager (FortiWLM) that allows remote attackers to take over devices by executing unauthorized code or commands through specially crafted web requests. FortiWLM is a centralized management tool for monitoring, managing, and optimizing wireless networks. It’s used by government agencies, healthcare organizations, educational institutions, and large enterprises. The […]
Chinese hackers exploit Fortinet VPN zero-day to steal credentials
Chinese threat actors use a custom post-exploitation toolkit named ‘DeepData’ to exploit a zero-day vulnerability in Fortinet’s FortiClient Windows VPN client that steal credentials. The zero-day allows the threat actors to dump the credentials from memory after the user authenticated with the VPN device Volexity researchers report that they discovered this flaw earlier this summer and […]