Live › vulnerability › CVE-2021-20038
Go to dashboardSonicWall SMA 100 series VPN/access appliances contain an unauthenticated stack-based buffer overflow. An attacker who can reach the device over the network can execute code on it.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| SonicWall SMA 100 Appliances | vendor | – | – |
Unknown from the sources.
Apply the SonicWall update for SMA 100 appliances per vendor instructions (CISA KEV required action); the fixed firmware version is unknown from these sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
This page as .md · .json · in your agent: get_signal("CVE-2021-20038")
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