High severity · published Oct 14, 2026
CVE-2026-14765
Epic Games Unreal Engine Insecure Default URL Scheme Allowance in LaunchURL
7.7
CVSS
0.4%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UE
Unreal Engine · Epic Games
through 5.8.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-14765
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-14765
related
https://khaelkugler.com/blogs/meccha_chameleon.html
third-party-advisory
https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001011111111101111111111110000000000000000000000000000000000000000000000000000001011
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