An unknown threat actor created malicious game modes for the Dota 2 multiplayer online battle arena (MOBA) video game that could have been exploited to establish backdoor access to players' systems.
The modes exploited a high-severity flaw in the V8 JavaScript engine tracked as CVE-2021-38003 (CVSS score: 8.8), which was exploited as a zero-day and addressed by Google in October 2021.
"Since V8
