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Servers and applications

CVE-2021-42757

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.

Severity
Medium 6.7
Published
8 Dec 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Fortinet FortiProxyServers and applications · cpe:a:fortinet:fortiproxy
  • From 1.0.0 up to 2.0.7
  • Version 7.0.0
  • Version 7.0.1
Fortinet FortiWebServers and applications · cpe:a:fortinet:fortiweb
  • From 5.0.0 up to 6.3.16
  • Version 6.4.0
  • Version 6.4.1
Fortinet FortiOSServers and applications · cpe:o:fortinet:fortios
  • From 5.0.0 up to 6.0.13
  • From 6.2.0 up to 6.2.9
  • From 6.4.0 up to 6.4.7
  • From 7.0.0 up to 7.0.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-42757
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-42757