QwikSec

Security Database

CVE

CWE

Training

CVE-2021-20038

Published: Dec 8, 2021

Modified: Oct 21, 2025

PUBLISHED

Description

A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions.

Vendor	Product	Versions
SonicWall	SonicWall SMA100	affected `10.2.0.8-37sv and earlier` affected `10.2.1.1-19sv and earlier` affected `10.2.1.2-24sv and earlier`

Weaknesses (CWE)

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026

x_refsource_CONFIRM

https://github.com/jbaines-r7/badblood

x_refsource_MISC

https://www.rapid7.com/blog/post/2022/01/11/cve-2021-20038-42-sonicwall-sma-100-multiple-vulnerabilities-fixed-2/

x_refsource_MISC

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.