What is CVE-2021-26105?

CVE-2021-26105 is a medium-severity vulnerability in Fortinet Fortisandbox, classified under CWE-358. CVSS score: 6.8/10. Published 2025-03-24.

How severe is CVE-2021-26105?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Buffer overflow in Fortinet Fortisandbox

CVE-2021-26105

A stack-based buffer overflow vulnerability (CWE-121) in the profile parser of FortiSandbox version 3.2.2 and below, version 3.1.4 and below may allow an authenticated attacker to potentially execute unauthorized code or commands via specifically crafted HTTP requests.

EPSS: 0.005 (38.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Fortinet Fortisandbox — versions 3.1.4, 4.0.0, 3.2.2

Weakness classification (CWE)

CWE-358
CWE-787 — Out-of-bounds Write

References

psirt@fortinet.com (Vendor Advisory)

Frequently asked questions

What is CVE-2021-26105?: CVE-2021-26105 is a medium-severity vulnerability in Fortinet Fortisandbox, classified under CWE-358. CVSS score: 6.8/10. Published 2025-03-24.
How severe is CVE-2021-26105?: Medium severity. CVSS v3 base score is 6.8 out of 10.