SB20260414118 - Integer overflow in FortiWeb
Published: April 14, 2026
Security Bulletin ID
SB20260414118
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer overflow (CVE-ID: CVE-2026-39811)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to integer overflow in administrative interface. A privileged authenticated attacker can perform a denial of service of the system via crafted HTTP requests.
Remediation
Install update from vendor's website.