Unrated severityNVD Advisory· Published Dec 8, 2021· Updated Oct 16, 2025
CVE-2021-42757
CVE-2021-42757
Description
A buffer overflow [CWE-121] in the TFTP client library of FortiOS before 6.4.7 and FortiOS 7.0.0 through 7.0.2, may allow an authenticated local attacker to achieve arbitrary code execution via specially crafted command line arguments.
Affected products
14cpe:2.3:o:fortinet:fortiddos:5.5.1:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fortinet:fortiddos:5.5.1:*:*:*:*:*:*:*range: 5.5.0
- cpe:2.3:o:fortinet:fortiddos-f:6.4.1:*:*:*:*:*:*:*range: 6.4.0
- Range: 7.0.0
Patches
Vulnerability mechanics
References
1News mentions
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