Fortinet FortiWeb up to 8.0.3 HTTP Request stack-based overflow

Summaryinfo

A vulnerability identified as critical has been detected in Fortinet FortiWeb up to 7.0.12/7.2.12/7.4.11/7.6.6/8.0.3. Affected is an unknown function of the component HTTP Request Handler. This manipulation causes stack-based overflow. This vulnerability is tracked as CVE-2026-30897. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Fortinet FortiWeb up to 7.0.12/7.2.12/7.4.11/7.6.6/8.0.3. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component HTTP Request Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A stack-based buffer overflow vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow a remote authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests.

It is possible to read the advisory at fortiguard.fortinet.com. This vulnerability is known as CVE-2026-30897 since 03/06/2026. The exploitation appears to be difficult. The attack can be launched remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Firewall Software

Vendor

• Fortinet

Name

• FortiWeb

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12
• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6
• 7.2.7
• 7.2.8
• 7.2.9
• 7.2.10
• 7.2.11
• 7.2.12
• 7.4.0
• 7.4.1
• 7.4.2
• 7.4.3
• 7.4.4
• 7.4.5
• 7.4.6
• 7.4.7
• 7.4.8
• 7.4.9
• 7.4.10
• 7.4.11
• 7.6.0
• 7.6.1
• 7.6.2
• 7.6.3
• 7.6.4
• 7.6.5
• 7.6.6
• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3

License

• commercial

Website

• Vendor: https://www.fortinet.com/

CPE 2.3info

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Entryinfo

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