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CVE-2026-14765

Epic Games Unreal Engine Insecure Default URL Scheme Allowance in LaunchURL

CVSS score

7.7

EPSS probability

—

Risk score

0.8

Published

9 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-14765 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

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).

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-14765 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Epic GamesUnreal Engine View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.7CVSS V3_1HIGHCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:HCVE CNA
7.7CVSS V31HIGHCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:HNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-14765 is associated with the following CWEs:

CWE-1188: Common Weakness Enumeration Entry CWE-1188

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-14765 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim
PermissionsGerekmiyor
UserGerekiyor

Official Sources and Advisories

https://khaelkugler.com/blogs/meccha_chameleon.htmlvendor-advisoryhttps://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001011111111101111111111110000000000000000000000000000000000000000000000000000001011vendor-advisory

CVSS Vector Radar Chart

7.7 / 10
Attack VectorLocalComplexityHighPrivilegesNoneUser Interact.RequiredConfidentialityHighIntegrityHighAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack VectorLocal
Attack ComplexityHigh
Privileges RequiredNone required
User Interaction—
Confidentiality (Gizlilik)High
Integrity (Bütünlük)High
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

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Follow the vendor

EG
Epic Games logo
Epic Games

Weakness Type (CWE & CAPEC)

CWE-1188

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