CVE-2020-36603

Public Exploit

Description

The HoYoVerse (formerly miHoYo) Genshin Impact mhyprot2.sys 1.0.0.0 anti-cheat driver does not adequately restrict unprivileged function calls, allowing local, unprivileged users to execute arbitrary code with SYSTEM privileges on Microsoft Windows systems. The mhyprot2.sys driver must first be installed by a user with administrative privileges.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.55%

Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory archive.org Third-Party Advisory trendmicro.com Third-Party Advisory vice.com

Affected: n/a n/a

References

Link	Tags
https://github.com/kkent030315/evil-mhyprot-cli	third party advisory
https://www.trendmicro.com/en_us/research/22/h/ransomware-actor-abuses-genshin-impact-anti-cheat-driver-to-kill-antivirus.html	third party advisory exploit
https://www.vice.com/en/article/y3p35w/hackers-are-using-anti-cheat-in-genshin-impact-to-ransom-victims	press/media coverage exploit third party advisory
https://github.com/kagurazakasanae/Mhyprot2DrvControl	third party advisory
https://web.archive.org/web/20211204031301/https://www.godeye.club/2021/05/20/001-disclosure-mhyprot.html	third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-36603?: CVE-2020-36603 has been scored as a medium severity vulnerability.
How to fix CVE-2020-36603?: To fix CVE-2020-36603, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-36603 being actively exploited in the wild?: It is possible that CVE-2020-36603 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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