CVE-2026-18397

SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability

Published Oct 1, 2026 CVSS 4.0 · 9.4 Critical EPSS < 1% KEV · Not listed
Description
This vulnerability enables unauthenticated remote code execution (RCE) on a victim's machine by exploiting a combination of cryptographic weaknesses and memory management issues in the SConnect native host component.

The attack leverages an unrestricted messaging interface between an attacker-controlled web page and the native host, allowing malicious input to bypass security checks.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Thales
Thales sconnect
Vendors & Products Thales
Thales sconnect
Type Values Removed Values Added
Description This vulnerability enables unauthenticated remote code execution (RCE) on a victim's machine by exploiting a combination of cryptographic weaknesses and memory management issues in the SConnect native host component. The attack leverages an unrestricted messaging interface between an attacker-controlled web page and the native host, allowing malicious input to bypass security checks.
Title SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability
Weaknesses CWE-130
CWE-252
CWE-347
CWE-457
References
Metrics cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

Sources

Status
PUBLISHED
Assigner
THA-PSIRT
Published
Updated
Oct 2, 2026, 7:42 PM
Reserved
Jul 30, 2026, 2:55 PM
Status
Deferred
Published
Oct 1, 2026, 10:17 PM
Modified
Oct 2, 2026, 8:17 PM