January 28, 2022 · Applied Cybernetics Group
CVE-2021-20038 — SonicWall SMA 100 Appliances
known ransomware use
SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability
- Added to KEV
2022-01-28- Federal due date
2022-02-11- Vendor
- SonicWall
- Product
- SMA 100 Appliances
- EPSS
- 100.0th percentile (score 0.999, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-20038
CISA short 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.