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Rewterz Threat Advisory – CVE-2021-26111 – Fortinet FortiSwitch Denial of Service

Severity

Medium

Analysis Summary

CVE-2021-26111

Fortinet FortiSwitch is vulnerable to a denial of service, caused by a memory leak flaw in the lldpmedd daemon. By sending specially-crafted LLDP/CDP/EDP packets, a remote attacker could exploit this vulnerability to exhaust available memory, and results in a denial of service condition.

Impact

  • Denial of Service

Affected Vendors

Fortinet

Affected Products

  • Fortinet FortiSwitch 6.2.6
  • FortinetSwitch 6.4.6

Remediation

Refer to FortiGuard Advisory for patch, upgrade or suggested workaround information.

https://www.fortiguard.com/psirt/FG-IR-21-026