CVE-2025-25249
Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability
A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. Deadline for federal agencies: 2026-09-12.
5 articles across 5 outlets · first covered Sep 10, 2026 · latest Sep 14, 2026
Coverage timeline
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Russian Hackers Exploit Fortinet Flaw to Deploy PivotC2 Trojansecurityonline.info · Sep 14, 2026
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CISA Flags Four Actively Exploited Flaws Including Cisco Zero Daysecurityaffairs.com · Sep 10, 2026
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CISA Flags Cisco, Citrix and Fortinet Flaws Under Active Attackthehackernews.com · Sep 10, 2026
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Fortinet Flaw Exploited to Deploy PivotC2 RAT Across 178 Deviceswww.securityweek.com · Sep 10, 2026
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CISA Flags Actively Exploited Fortinet Flaw Allowing Code Executioncisa.gov · Sep 10, 2026