CVE-2021-20038
SonicWall SMA 100 Appliances: Stack-based Buffer Overflow
- Act now
- CVSS 9.8 Critical
- CISA KEV, due
- VulnCheck KEV
- ENISA exploited-vulnerability catalog
What it is
ReportedSonicWall SMA 100 devies are vulnerable to an unauthenticated stack-based buffer overflow vulnerability where exploitation can result in code execution.
Dates
What is affected
ReportedSonicWall; SMA 100 Appliances. Product-level identification only; no affected-version conclusion is available from this field.
Dates
Urgency and basis
Tracker computedAct now
Current priority score and EPSS: loading from the tracker record. They are read when this page loads and are not shown without JavaScript. They change daily and are not part of "Source last updated".
Dates
Exploitation evidence
ReportedActive exploitation · CISA KEV · VulnCheck KEV · ENISA exploited-vulnerability catalog
Dates
What to do
ReportedApply updates per vendor instructions.
Source remediation ↗Dates
Detection and validation
Mapped metadata availability only. These signals do not change priority.
Sigma
Not mapped by tracked sources.
Atomic
Not mapped by tracked sources.
Nuclei
SonicWall SMA100 Stack - Buffer Overflow/Remote Code Execution. Check identifier: CVE-2021-20038.
Open Nuclei metadata
Evidence detail
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