HoYoVerse Genshin Impact Anti-Cheat Driver 1.0.0.0 Function Call mhyprot2.sys privilege escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in HoYoVerse Genshin Impact Anti-Cheat Driver 1.0.0.0. Affected is an unknown function in the library mhyprot2.sys of the component Function Call Handler. The manipulation results in an unknown weakness. This vulnerability is cataloged as CVE-2020-36603. The attack may be launched remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in HoYoVerse Genshin Impact Anti-Cheat Driver 1.0.0.0 (Hardware Driver Software). Affected is an unknown function in the library mhyprot2.sys of the component Function Call Handler. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was shared 09/15/2022. The advisory is available at trendmicro.com. This vulnerability is traded as CVE-2020-36603 since 09/14/2022. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.3

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/14/2022 🔍
09/15/2022 +1 days 🔍
09/15/2022 +0 days 🔍
06/04/2025 +993 days 🔍

Sourcesinfo

Advisory: trendmicro.com
Status: Not defined

CVE: CVE-2020-36603 (🔍)
GCVE (CVE): GCVE-0-2020-36603
GCVE (VulDB): GCVE-100-208614
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/15/2022 06:57
Updated: 06/04/2025 17:45
Changes: 09/15/2022 06:57 (41), 10/17/2022 14:30 (11), 06/04/2025 17:45 (15)
Complete: 🔍
Cache ID: 216::103

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