CVE-2026-24640 — Stack-based Buffer Overflow in Fortinet Fortiweb

CWE-121 — Stack-based Buffer OverflowCWE-787 — Out-of-bounds Write5 documents5 sources
Severity
6.6MEDIUMNVD
EPSS
0.0%
top 85.75%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Fortinet Fortiweb
Timeline
PublishedMar 10

Description

A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4 all versions, FortiWeb 7.2 all versions, FortiWeb 7.0.2 through 7.0.12 may allow a remote authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.7 | Impact: 5.9

Affected Packages2 packages

▶NVDfortinet/fortiweb7.2.0 — 7.6.7+2
▶CVEListV5fortinet/fortiweb8.0.0 — 8.0.2+4

🔴Vulnerability Details

2
CVEList
CVE-2026-24640: A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiWeb 8↗2026-03-10
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GHSA
GHSA-849p-548g-9rj3: A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiWeb 8↗2026-03-10
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📋Vendor Advisories

1
Fortinet
Stack-based Buffer Overflow in API protection↗2026-03-10
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🕵️Threat Intelligence

1
Wiz
CVE-2026-24640 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-24640 — Stack-based Buffer Overflow | cvebase