Microsoft patched a critical security vulnerability in the remastered version of Age of Empires II on Tuesday, preventing remote hackers from hijacking players’ computers through malicious in-game invites.
The fix was part of a historic, record-breaking security deployment. Microsoft addressed an unprecedented number of vulnerabilities across its entire product ecosystem, largely driven by the deployment of artificial intelligence to assist internal and external security researchers in identifying system weaknesses.
The Age of Empires II Remote Code Execution Flaw
Among the high-profile vulnerabilities resolved in this massive update was one affecting the remastered edition of the iconic, 25-year-old real-time strategy game. Security researchers discovered that the flaw allowed malicious actors to compromise a victim’s PC simply by sending a specifically crafted, malicious game invitation.
A proof-of-concept video posted on X demonstrates the ease with which attackers could exploit this vulnerability to execute arbitrary code on target systems.
Here’s the Age of Empires RCE from yesterday’s Patch Tuesday: CVE-2026-50663.
Join an attacker’s lobby, (auto-)accept UCG, and you get remote code execution. pic.twitter.com/QmMkY07C8S
— Rick de Jager (@rdjgr) July 15, 2026
How the Attack Vector Compromises PCs
According to analysis from cybersecurity firm Rapid7, a successful exploitation of CVE-2026-50663 allows attackers to silently drop malicious files onto the victim’s local storage. This initial foothold grants the threat actor the capability to execute unauthorised code remotely.
Full System Takeover Risks
In practical terms, this level of access means an attacker could completely seize control of the compromised computer. Once the malicious payload is active, the hacker gains equivalent user privileges, allowing them to manipulate files, install software, or access sensitive personal data.
While there is currently no evidence suggesting that cybercriminals have actively exploited this vulnerability in the wild, the gaming community remains a highly lucrative target. Threat actors frequently target PC gamers as a pathway to deploy malware en masse, steal valuable credentials, and compromise personal accounts.