CVE-2020-36603

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2022-09-15. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
45(Track*)
EG Risk 45/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
34.5%
KEV
Not listed

Published

September 14, 2022

Last Modified

June 4, 2025

References (10)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 38× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-24 14:14 UTCEPSS rescore
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  64. 2026-05-25 15:28 UTCEG score recompute
  65. 2026-05-25 15:28 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCgmh5225/CVE-2020-36603
    First seen Jan 12, 2023

    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 CVE project by @Sn0wAlice

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-36603?
CVE-2020-36603 is a medium vulnerability published on September 14, 2022. 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…
When was CVE-2020-36603 disclosed?
CVE-2020-36603 was first published in the National Vulnerability Database on September 14, 2022, with the most recent update on June 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-36603 actively exploited?
CVE-2020-36603 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-36603?
CVE-2020-36603 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2020-36603?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-36603, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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