Web Scanning SonicWall for CVE-2021-20016 – Update, (Wed, May 14th)

I published on the 29 Apr 2025 a diary [1] on scanning activity looking for SonicWall and since this publication this activity has grown 10-fold. Over the past 14 days, several BACS students have reported activity related to SonicWall scans all related for the same 2 URLs [4][5] previously mentioned in my last diary. My own DShield sensor was probed by 25 separate IPs during those last 14 days. The three most active IPs were all from the same subnet – 141.98.80.0/24

This article has been indexed from SANS Internet Storm Center, InfoCON: green

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