VULNERABILITY INTELLIGENCE
CVE-2021-20046
CVSS score8.8 HIGH
EPSS probability2.00%
CISA KEVNot currently listed
Published2022-01-10
Last modified2026-06-17
Description
A Stack-based buffer overflow in the SonicOS HTTP Content-Length response header allows a remote authenticated attacker to cause Denial of Service (DoS) and potentially results in code execution in the firewall. This vulnerability affected SonicOS Gen 5, Gen 6 and Gen 7 firmware versions.