Critical severity9.8NVD Advisory· Published Aug 24, 2016· Updated Jun 17, 2026

CVE-2016-6909

Description

Buffer overflow in the Cookie parser in Fortinet FortiOS 4.x before 4.1.11, 4.2.x before 4.2.13, and 4.3.x before 4.3.9 and FortiSwitch before 3.4.3 allows remote attackers to execute arbitrary code via a crafted HTTP request, aka EGREGIOUSBLUNDER.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Fortinet/Fortiosllm-fuzzy
Range: 4.x before 4.1.11, 4.2.x before 4.2.13, 4.3.x before 4.3.9
Fortinet/FortiSwitch GUIllm-fuzzy
Range: <3.4.3

Patches

Vulnerability mechanics

References

packetstormsecurity.com/files/138387/EGREGIOUSBLUNDER-Fortigate-Remote-Code-Execution.htmlnvdExploitThird Party AdvisoryVDB Entry
www.exploit-db.com/exploits/40276/nvdExploitThird Party AdvisoryVDB Entry
fortiguard.com/advisory/FG-IR-16-023nvdVendor Advisory
www.securityfocus.com/bid/92523nvdThird Party AdvisoryVDB Entry
www.securitytracker.com/id/1036643nvdThird Party AdvisoryVDB Entry
musalbas.com/2016/08/16/equation-group-firewall-operations-catalogue.htmlnvdThird Party Advisory

News mentions

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cvss	0.637
epss	0.040
exploit	0.030
kev	0.000
patch	0.000
ransomware	0.000