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<rss version="2.0"><channel><title>Fortinet security news · Threat Recap</title><link>vendors/fortinet.html</link><description>Security news, advisories and CVEs for Fortinet</description><lastBuildDate>Mon, 19 Oct 2026 12:28:44 GMT</lastBuildDate>
<item><title>Exploited Fortinet Bug Linked to Stealthy FortiGate Implant in Telecom Hack</title><link>https://www.securityweek.com/exploited-fortinet-bug-linked-to-stealthy-fortigate-implant-in-telecom-hack/</link><guid isPermaLink="false">r60kan</guid><pubDate>Mon, 19 Oct 2026 11:13:23 GMT</pubDate><description>SecurityWeek. The persistent, stealthy FortiGate implant was deployed against a telecommunications organization.</description><category>Vulnerability</category><category>Malware</category></item>
<item><title>U.S. CISA adds Fortinet Multiple Products and BeyondTrust Remote Support flaws to its Known Exploited Vulnerabilities catalog</title><link>https://securityaffairs.com/201178/security/u-s-cisa-adds-fortinet-multiple-products-and-beyondtrust-remote-support-flaws-to-its-known-exploited-vulnerabilities-catalog.html</link><guid isPermaLink="false">xxu9u</guid><pubDate>Sat, 17 Oct 2026 10:35:48 GMT</pubDate><description>Security Affairs. U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Fortinet Multiple Products and BeyondTrust Remote Support flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the…</description><category>Vulnerability</category></item>
<item><title>PoC Released for Critical Fortinet FortiClient EMS Authentication Bypass Vulnerability</title><link>https://news.google.com/rss/articles/CBMigwFBVV95cUxQSjBMbEZ2dzlhT3JWVndYekZKLXctaEdHWlZDR0hWQ2FGN3B1ZkNSN3BkQWZjVHdBdHVzM0lxZXNIQmN6aDUxWXlTano5RVVRNlNoLUxqUnM5VmN2NlcxdERady1EYmJ0cGRTMEUzSmZ3ekJ0bWgyUDhjdkZ5QXE4dW1sc9IBiAFBVV95cUxNcHVxWkdyMG9QdU04RFpIX1l6S2RMR0R1LVhVN1pMQmVab2tZNmpJZGFFTEZ3OF94Qzgtck9kN0lVbTF1RDZmZFZtaEpOZlZXVDFsUFpHQklia0V3OXZMc0l1VWRtUUtnZ3REN2ZwbXJOQzFDWk9Qd21wdExmSHVTYlNySTlYZFpD?oc=5</link><guid isPermaLink="false">1qxku6</guid><pubDate>Sat, 17 Oct 2026 06:41:48 GMT</pubDate><description>Cybersecurity News. PoC Released for Critical Fortinet FortiClient EMS Authentication Bypass Vulnerability CyberSecurityNews</description><category>Vulnerability</category></item>
<item><title>PEERSTITCH malware: How Attackers Compromised 500 Firewalls Through FortiManager</title><link>https://securityaffairs.com/201077/malware/peerstitch-malware-how-attackers-compromised-500-firewalls-through-fortimanager.html</link><guid isPermaLink="false">1mpulbq</guid><pubDate>Fri, 16 Oct 2026 09:08:57 GMT</pubDate><description>Security Affairs. PEERSTITCH malware exploited FortiManager to expose 500+ firewalls, evade detection inside FortiOS memory, and maintain stealthy access. PEERSTITCH, a stealthy implant deployed during a prolonged intrusion, helped attackers maintain access to a telecom…</description><category>Malware</category></item>
<item><title>PEERSTITCH Malware Deployed via FortiOS Flaw Bypasses Checks on Tagged VPN Sessions</title><link>https://thehackernews.com/2026/10/attackers-exploit-fortios-flaw-to.html</link><guid isPermaLink="false">c03lkb</guid><pubDate>Fri, 16 Oct 2026 04:59:36 GMT</pubDate><description>The Hacker News. A suspected advanced threat actor has been observed exploiting a security flaw in Fortinet FortiOS to deliver a previously unreported memory-resident ARM64 malware known as PEERSTITCH. The attack involves the exploitation of CVE-2025-61624 (CVSS score: 5.4),…</description><category>Vulnerability</category><category>Malware</category><category>Zero-day</category></item>
<item><title>Hackers Exploit Fortinet Vulnerabilities to Deploy Stealthy PEERSTITCH Malware on FortiGate Firewalls</title><link>https://cybersecuritynews.com/fortinet-vulnerabilities/</link><guid isPermaLink="false">qf4rnt</guid><pubDate>Thu, 15 Oct 2026 12:22:12 GMT</pubDate><description>Cybersecurity News. Attackers compromised a telecommunications managed service provider by exploiting vulnerabilities in Fortinet’s centralized management and firewall systems, then deployed PEERSTITCH, a stealthy malware implant that runs inside FortiGate processes. Unit 42…</description><category>Vulnerability</category><category>Malware</category></item>
<item><title>PoC Released for Critical Fortinet FortiClient EMS Authentication Bypass Vulnerability</title><link>https://cybersecuritynews.com/poc-released-for-forticlient-ems-vulnerability/</link><guid isPermaLink="false">1302hfy</guid><pubDate>Thu, 15 Oct 2026 09:47:55 GMT</pubDate><description>Cybersecurity News. A public proof-of-concept (PoC) for CVE-2026-35616, a critical authentication and authorization bypass in Fortinet FortiClient Endpoint Management Server (EMS), lets defenders test whether affected systems are exposed. The Python tool’s repository says the…</description><category>Vulnerability</category><category>Zero-day</category></item>
<item><title>ZDI-26-772: Fortinet FortiSandbox Admin Profile Improper Handling of Exceptional Conditions Denial-of-Service Vulnerability</title><link>http://www.zerodayinitiative.com/advisories/ZDI-26-772/</link><guid isPermaLink="false">obvy1w</guid><pubDate>Thu, 15 Oct 2026 05:00:00 GMT</pubDate><description>ZDI Published Advisories. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Fortinet FortiSandbox. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 4.9. The following CVEs are…</description><category>Advisory</category><category>Vulnerability</category></item>
<item><title>Unit 42 Uncovers PEERSTITCH, a Stealthy FortiGate Implant</title><link>https://unit42.paloaltonetworks.com/fortimanager-cve-2024-47575-peerstitch-malware/</link><guid isPermaLink="false">cddqz0</guid><pubDate>Wed, 14 Oct 2026 22:00:44 GMT</pubDate><description>Unit 42. We investigated an intrusion where attackers exploited CVE-2024-47575 to target 500+ firewalls and deploy PEERSTITCH, a memory-resident ARM64 malware.</description><category>Research</category><category>Malware</category><category>Vulnerability</category></item>
<item><title>Citrix, Fortinet, Ivanti Patch 29 Vulnerabilities Across Their Products</title><link>https://www.securityweek.com/citrix-fortinet-ivanti-patch-29-vulnerabilities-across-their-products/</link><guid isPermaLink="false">1ui5s7s</guid><pubDate>Wed, 14 Oct 2026 07:26:35 GMT</pubDate><description>SecurityWeek. Critical-severity flaws could lead to authentication bypass, code execution, and sensitive authentication information leaks.</description><category>Vulnerability</category></item>
<item><title>Critical FortiSandbox GUI Vulnerability Allows Remote Attackers to Bypass Authentication</title><link>https://cybersecuritynews.com/fortisandbox-gui-vulnerability/</link><guid isPermaLink="false">20ct1f</guid><pubDate>Tue, 13 Oct 2026 17:54:42 GMT</pubDate><description>Cybersecurity News (+1 more sources). Fortinet disclosed a critical authentication-bypass vulnerability in the FortiSandbox graphical user interface that could let remote attackers access protected functions without valid credentials. Tracked as CVE-2026-107656, the flaw carries a reported CVSSv3…</description><category>Vulnerability</category><category>Advisory</category></item>
<item><title>FortiBleed Attackers Locking Victims Out of Fortinet Devices</title><link>https://www.securityweek.com/fortibleed-attackers-locking-victims-out-of-fortinet-devices/</link><guid isPermaLink="false">1jj13hh</guid><pubDate>Thu, 08 Oct 2026 07:52:33 GMT</pubDate><description>SecurityWeek. Attackers are creating new accounts and deleting existing ones and passwords to prevent legitimate access.</description></item>
<item><title>FBI: Ongoing FortiBleed attacks lock out FortiGate VPN admins</title><link>https://www.bleepingcomputer.com/news/security/fbi-ongoing-fortibleed-attacks-lock-out-fortigate-vpn-admins/</link><guid isPermaLink="false">1n6l5h0</guid><pubDate>Wed, 07 Oct 2026 21:28:54 GMT</pubDate><description>BleepingComputer. The FBI is warning that FortiBleed attacks are still ongoing, targeting exposed Fortinet FortiGate firewalls and SSL VPN gateways and locking out legitimate administrators. [...]</description><category>Law &amp; policy</category></item>
<item><title>FortiBleed is still active, with attackers locking admins out of Fortinet firewalls</title><link>https://www.helpnetsecurity.com/2026/10/07/fortinet-fortibleed-campaign-fbi-advisory/</link><guid isPermaLink="false">16hr7ur</guid><pubDate>Wed, 07 Oct 2026 13:43:09 GMT</pubDate><description>Help Net Security. Some organizations hit by the FortiBleed campaign have been locked out of their own Fortinet firewalls, according to a joint FBI and U.S. Secret Service advisory. FortiBleed targets internet-facing Fortinet FortiGate firewalls and SSL VPN gateways. The…</description><category>Vulnerability</category></item>
<item><title>FBI Warns FortiBleed Remains Active After Amassing 86,644 Fortinet Device Credentials</title><link>https://thehackernews.com/2026/10/fbi-warns-fortibleed-remains-active.html</link><guid isPermaLink="false">18yljg6</guid><pubDate>Wed, 07 Oct 2026 11:56:56 GMT</pubDate><description>The Hacker News. The U.S. Federal Bureau of Investigation (FBI) and Secret Service (USSS) on Tuesday warned that the FortiBleed credential harvesting campaign remains an active threat aimed at internet-facing Fortinet FortiGate firewalls and secure socket layer (SSL) virtual…</description><category>Law &amp; policy</category></item>
<item><title>Fortinet warns that critical flaw in FortiMail is facing exploitation</title><link>https://www.cybersecuritydive.com/news/fortinet-critical-flaw-fortimail-exploitation/832017/</link><guid isPermaLink="false">g8sxyf</guid><pubDate>Fri, 02 Oct 2026 14:56:00 GMT</pubDate><description>Cybersecurity Dive. Security researchers said that attackers can gain access to credentials, stored mail and other connected systems.</description><category>Vulnerability</category></item>
<item><title>Fortinet warns of critical FortiMail flaw exploited in zero-day attacks</title><link>https://www.bleepingcomputer.com/news/security/fortinet-warns-of-critical-fortimail-flaw-exploited-in-zero-day-attacks/</link><guid isPermaLink="false">12p8822</guid><pubDate>Thu, 01 Oct 2026 22:42:49 GMT</pubDate><description>BleepingComputer (+4 more sources). Fortinet is warning customers of a critical FortiMail vulnerability, tracked as CVE-2026-104286, that is being actively exploited in zero-day attacks to execute unauthorized code or commands on vulnerable devices. [...]</description><category>Vulnerability</category><category>Zero-day</category></item>
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