CVE-2025-63685

CRITICAL 9.8CVE-2025-63685 · Published 20/11/2025 · updated 17/06/2026

In short

CVE-2025-63685 is a CRITICAL (CVSS 9.8) vulnerability affecting quark cloud drive (quark).
Chance of exploitation in the next 30 days (EPSS): 0.40%, higher than 33.7% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
quark cloud drive quark	`= 3.23.2`	No fix yet

Description

Quark Cloud Drive v3.23.2 has a DLL Hijacking vulnerability. This vulnerability stems from the insecure loading of system libraries. Specifically, the application does not validate the path or signature of [regsvr32.exe] it loads. An attacker can place a crafted malicious DLL in the application's startup directory, which will be loaded and executed when the user launches the program.

References

QIU-DIE/CVE · Exploit

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