CVE-2021-20038
SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability
CVSS
—
No CVSS
EPSS
99.9%
p100
KEV
YES
Jan 28, 2022
Exploit Today
80
0-100
Published: — · Last modified: —
99.9%EPSS · 30 days99.9%
2026-09-162026-10-14
Product
SonicWall / SMA 100 Appliances
Vulnerability
SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability
Added to KEV
Jan 28, 2022
Remediate by
Feb 11, 2022
Known ransomware use
Yes
Summary description
SonicWall SMA 100 devies are vulnerable to an unauthenticated stack-based buffer overflow vulnerability where exploitation can result in code execution.
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-20038
No related CVEs by CWE or product.