CVE-2026-40688
An out-of-bounds write vulnerability [CWE-787] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWe
CVSS
7.2
High
EPSS
6.4%
p94
KEV
—
Exploit Today
28
0-100
Published: Apr 14, 2026 · Last modified: Jul 24, 2026 · CWE-787
0.9%EPSS · 30 days6.4%
2026-10-042026-10-31
An out-of-bounds write vulnerability [CWE-787] 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 may allow a remote privileged attacker to execute arbitrary code or command via crafted HTTP requests.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-68589——
———In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: MOLY01320076; Issue ID: MSV-6889.7hCVE-2026-20585——
———In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01338165; Issue ID: MSV-9660.7hCVE-2026-20584——
———In usb, there is a possible memory corruption due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11411916; Issue ID: MSV-9746.7hCVE-2026-20567——
———In afe, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11431394; Issue ID: MSV-10004.7hCVE-2026-20566——
———In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, if a malicious actor has already obtained the System privilege. User interaction is needed for exploitation. Patch ID: MOLY01923663 / ALPS11315955; Issue ID: MSV-10866.7hCVE-2026-20565——
———In Modem, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01778991; Issue ID: MSV-8900.7h