CVE-2021-20046

HIGH

SonicOS < 7.0.1-r146 - Authenticated Stack-based Buffer Overflow via HTTP Content-Length Header

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 8.8
EPSS 0.0137
EPSS Percentile 80.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-121 CWE-787
Status published
Products (1)
sonicwall/sonicos < 7.0.1-r146
Published Jan 10, 2022
Tracked Since Feb 18, 2026