
Cybersecurity researchers from Sophos have discovered a new hacking campaign in which the threat actors leveraged a known vulnerability to conduct domain-wide attacks.
According to the researchers’ report, a group called 'STAC4663' managed to exploit CVE-2023-3519 to infiltrate vulnerable systems and deploy all sorts of malicious software. The exploit is a remote code execution vulnerability discovered earlier this summer in Citrix NetScaler systems.