vulnerability
Fortinet FortiOS: Integer Overflow or Wraparound (CVE-2021-26109)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | Dec 8, 2021 | Dec 13, 2021 | Aug 11, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Dec 8, 2021
Added
Dec 13, 2021
Modified
Aug 11, 2025
Description
An integer overflow or wraparound vulnerability in the memory allocator of SSLVPN in FortiOS before 7.0.1 may allow an unauthenticated attacker to corrupt control data on the heap via specifically crafted requests to SSLVPN, resulting in potentially arbitrary code execution.
Solution
fortios-upgrade-latest
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