SonicOS vulnerability involving improper neutralization of HTTP header resulting in unauthenticated Denial of Service (DoS)

A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request. This vulnerability affects SonicOS Gen5, Gen6, Gen7 platforms, and SonicOSv virtual firewalls.

SonicWall PSIRT is not aware of any active exploitation of this vulnerability in the wild

No reports of a PoC have been made public at the time of this advisory

CVE: CVE-2021-20027
Last updated: June 16, 2021, 6:58 p.m.