https://www.bleepingcomputer.com/news/security/cisa-warns-govt-agencies-of-recently-patched-barracuda-zero-day/

CISA warned today of a recently patched zero-day vulnerability exploited last week to hack into Barracuda Email Security Gateway (ESG) appliances.

Barracuda says its security solutions are used by more than 200,000 organizations worldwide, including high-profile companies like Samsung, Mitsubishi, Kraft Heinz, and Delta Airlines.