Security News > 2022 > May > Windows MSDT zero-day now exploited by Chinese APT hackers
Chinese-linked threat actors are now actively exploiting a Microsoft Office zero-day vulnerability to execute malicious code remotely on Windows systems.
This Microsoft Windows Support Diagnostic Tool remote code execution flaw impacts all Windows client and server platforms still receiving security updates.
The TA413 APT group, a hacking outfit linked to Chinese state interests, has adopted this vulnerability in attacks against their favorite target, the international Tibetan community.
As observed on May 30 by Proofpoint security researchers, they're now using CVE-2022-30190 exploits to execute malicious code via the MSDT protocol when targets open or preview Word documents delivered in ZIP archives.
You can block attacks exploiting CVE-2022-30190 by disabling the MSDT URL protocol malicious actors abuse to launch troubleshooters and execute code on vulnerable systems.
Today, CISA also urged admins and users to disable the MSDT protocol on their Windows devices after Microsoft reported active exploitation of this vulnerability in the wild.
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Related Vulnerability
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2022-06-01 | CVE-2022-30190 | Externally Controlled Reference to a Resource in Another Sphere vulnerability in Microsoft products A remote code execution vulnerability exists when MSDT is called using the URL protocol from a calling application such as Word. | 0.0 |