CVE-2016-6909 Memory corruption in n/a

What is CVE-2016-6909?

CVE-2016-6909 is a critical memory corruption vulnerability in Fortinet Fortios, published on 24 Aug 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-119

Which versions are affected by CVE-2016-6909?

It affects 2 products.

Products include Fortinet Fortios, Fortinet Fortiswitch.

How do I fix CVE-2016-6909?

No fix has been published for CVE-2016-6909 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2016-6909 being exploited?

There is no known exploitation of CVE-2016-6909 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in Fortinet Fortios

• CVE-2024-23113 Fortinet Multiple Products Format String Exploited Critical 9.8
• CVE-2022-40684 Fortinet Multiple Products Authentication Bypass Exploited Critical 9.8
• CVE-2024-55591 Fortinet FortiOS and FortiProxy Authentication Bypass Exploited Critical 9.6
• CVE-2024-21762 Fortinet FortiOS Out-of-Bound Write Exploited Critical 9.6
• CVE-2022-42475 Fortinet FortiOS Heap-Based Buffer Overflow Exploited Critical 9.3

All Fortinet Fortios vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-f3wq-8j4r-5p8m.