Privilege escalation in Hoyoverse Mhyprot2
CVE-2020-36603
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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (47.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Hoyoverse Mhyprot2 — versions 1.0.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/kkent030315/evil-mhyprot-cli (Third Party Advisory)
- www.trendmicro.com/en_us/research/22/h/ransomware-actor-abuses-genshin-impact-a… (Exploit, Third Party Advisory)
- www.vice.com/en/article/y3p35w/hackers-are-using-anti-cheat-in-genshin-impact-t… (Exploit, Third Party Advisory, Press/Media Coverage)
- github.com/kagurazakasanae/Mhyprot2DrvControl (Third Party Advisory)
- web.archive.org/web/20211204031301/https://www.godeye.club/2021/05/20/001-discl… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-36603?
- CVE-2020-36603 is a medium-severity vulnerability in Hoyoverse Mhyprot2, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2022-09-14.
- How severe is CVE-2020-36603?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-36603 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.