RCE in Epic Games Unreal Engine
CVE-2026-14765
Epic Games Unreal Engine versions up to and including 5.8.0 ship with an insecure default configuration for the LaunchURL Blueprint node (UKismetSystemLibrary::LaunchURL). The URL scheme filter (FURLRequestFilter) is empty by default, which permits all URL schemes. On Windows, this results in a call to ShellExecuteW() with the open verb, so a supplied file:/// URI causes the referenced file to be executed. Any Unreal Engine game that loads user-generated content containing Blueprints is vulnerable to command execution via a malicious local file or a remote file on a WebDAV share. This is an instance of CWE-1188 (Initialization of a Resource with an Insecure Default).
Published .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- khaelkugler.com/blogs/meccha_chameleon.html (related)
- takeonme.org/gcves/GCVE-1337-2026-000000000000000000000000000000000000000000000… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-14765?
- CVE-2026-14765 is a high-severity vulnerability in Epic Games Unreal Engine, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.7/10. Published 2026-10-14.
- How severe is CVE-2026-14765?
- High severity. CVSS v3 base score is 7.7 out of 10.