What is CVE-2021-47742?

CVE-2021-47742 is a high-severity vulnerability in Epic Games Inc. Psyonix Rocket League, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.8/10. Published 2025-12-31.

How severe is CVE-2021-47742?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Epic Games Inc. Psyonix Rocket League

CVE-2021-47742

Epic Games Psyonix Rocket League <=1.95 contains an insecure permissions vulnerability that allows authenticated users to modify executable files with full access permissions. Attackers can leverage the 'F' (Full) flag for the 'Authenticated Users' group to change executable files and potentially escalate system privileges.

EPSS: 0.002 (11.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Epic Games Inc. Psyonix Rocket League — versions <=1.95

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

disclosure@vulncheck.com (third-party-advisory)
disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (vdb-entry)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2021-47742?: CVE-2021-47742 is a high-severity vulnerability in Epic Games Inc. Psyonix Rocket League, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.8/10. Published 2025-12-31.
How severe is CVE-2021-47742?: High severity. CVSS v3 base score is 8.8 out of 10.