CISA: Fortinet Releases Guidance to Address Ongoing Exploitation of Authentication Bypass Vulnerability CVE-2026-24858

Newly disclosed vulnerability Common Vulnerabilities and Exposures (CVE)-2026-24858 [Common Weakness Enumeration (CWE)-288: Authentication Bypass Using an Alternate Path or Channel] allows malicious actors with a FortiCloud account and a registered device to log in to separate devices registered to other Read More …

Fortinet admits FortiGate SSO bug still exploitable despite December patch

Fortinet has confirmed that attackers are actively bypassing a December patch for a critical FortiCloud single sign-on (SSO) authentication flaw after customers reported suspicious logins on devices supposedly fully up to date. In a new advisory, Fortinet said it had Read More …

Critical vulnerabilities in Fortinet CVE-2025-59718, CVE-2025-59719 exploited in the wild

A recently disclosed pair of vulnerabilities affecting Fortinet devices—CVE-2025-59718 and CVE-2025-59719—are drawing urgent attention after confirmation of their active exploitation in the wild. The vulnerabilities carry a critical CVSSv3 score and allow an unauthenticated remote attacker to bypass authentication using Read More …

Fortinet Releases Security Advisory for Relative Path Traversal Vulnerability Affecting FortiWeb Products

CISA is aware of exploitation of a newly disclosed vulnerability, CVE-2025-64446, in Fortinet FortiWeb, a web application firewall. This vulnerability affects the following FortiWeb versions:1 8.0.0 through 8.0.1 7.6.0 through 7.6.4 7.4.0 through 7.4.9 7.2.0 through 7.2.11 7.0.0 through 7.0.11 Read More …

Fortinet Releases Security Advisory for Authentication Bypass Vulnerability

An authentication bypass using an alternate path or channel [CWE-288] vulnerability in FortiOS, FortiProxy & FortiPAM may allow an unauthenticated attacker to seize control of a managed device via crafted FGFM requests, if the device is managed by a FortiManager, Read More …

Fortinet Flaws Exploited by Qilin Ransomware

Fortinet was recently found to have certain vulnerabilities that hackers like the Qilin group exploited. Here’s how they manipulated these weaknesses: Misconfigurations in security appliances provided a direct entry point for Qilin.Outdated Software: Failure to update Fortinet software allowed the Read More …

Fortinet Releases Multiple Security Advisories

Fortinet has released security advisories to two critical vulnerabilities. The security advisories address one critical vulnerability in FortiOS, FortiProxy and FortiSwitchManager, and an exploited vulnerability in FortiVoice, FortiMail, FortiNDR, FortiRecorder and FortiCamera. CVE-2025-32756 is a ‘stack-based buffer overflow’ vulnerability with Read More …

Fortinet Releases Security Updates for FortiOS and FortiGate

Fortinet has released security updates for FortiOS to mitigate novel post-exploitation activity observed against FortiGate devices. The disclosure details a new persistence technique used by an attacker, in conjunction with known vulnerabilities, to maintain read-only access to FortiGate devices through Read More …

Hackers are exploiting Fortinet firewall bugs to plant ransomware

Security researchers have observed hackers linked to the notorious LockBit gang exploiting a pair of Fortinet firewall vulnerabilities to deploy ransomware on several company networks. In a report published last week, security researchers at Forescout Research said a group it’s Read More …

Hackers are exploiting a new Fortinet firewall bug to breach company networks

Security researchers say malicious hackers have been exploiting a newly discovered vulnerability in Fortinet firewalls to break into corporate and enterprise networks. In an advisory published Tuesday, security product maker Fortinet confirmed that a critical-rated vulnerability in its FortiGate firewalls, Read More …