https://thehackernews.com/2022/06/chinese-hackers-exploited-sophos.html

" sophisticated Chinese advanced persistent threat (APT) actor exploited a critical security vulnerability in Sophos' firewall product that came to light earlier this year to infiltrate an unnamed South Asian target as part of a highly-targeted attack.

"The attacker implement[ed] an interesting web shell backdoor, create[d] a secondary form of persistence, and ultimately launch[ed] attacks against the customer's staff," Volexity said in a report. "These attacks aimed to further breach cloud-hosted web servers hosting the organization's public-facing websites."

The zero-day flaw in question is tracked as CVE-2022-1040 (CVSS score: 9.8), and concerns an authentication bypass vulnerability that can be weaponized to execute arbitrary code remotely. It affects Sophos Firewall versions 18.5 MR3 (18.5.3) and earlier."