All vulnerabilities
CVE-2021-20038

SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability

SonicWall SMA 100 AppliancesNetwork & edge
Open in ThreatlineRecord JSON
CVSS
9.8Critical
ExploitationExploited in the wildAdded to KEV 28 Jan 2022. Known ransomware useCISA KEV
Exploit odds (EPSS)99.9%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline11 Feb 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 8 Dec 2021, 09:55 UTCPublishedCVE List
  2. 28 Jan 2022Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Scanner templateSonicWall SMA100 Stack - Buffer Overflow/Remote Code ExecutionNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

SonicWall SMA 100 devies are vulnerable to an unauthenticated stack-based buffer overflow vulnerability where exploitation can result in code execution.

Text from CVE List

Affected versions 3

  • SonicWall SMA100affected: 10.2.0.8-37sv and earlierCVE List
  • SonicWall SMA100affected: 10.2.1.1-19sv and earlierCVE List
  • SonicWall SMA100affected: 10.2.1.2-24sv and earlierCVE List

References 5