SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability (CVE-2021-20038)
Severity: critical · Patch status: patched · Since 2022-01-28 · CVE-2021-20038
SonicWall SMA 100 devies are vulnerable to an unauthenticated stack-based buffer overflow vulnerability where exploitation can result in code execution. CISA added CVE-2021-20038 to its Known Exploited Vulnerabilities catalog on Jan 28, 2022, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Feb 11, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
