---
id: CVE-2026-18397
title: >-
  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 leverage…
summary: >-
  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 leverage…
severity: critical
cvss: 9.4
cvssVector: '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'
cwe:
  - CWE-130
  - CWE-252
  - CWE-347
  - CWE-457
vendor: Thales
product: SConnect
affected:
  - SConnect < 2.16.1.0
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T22:17:01.220'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18397'
references:
  - url: 'https://www.thalesgroup.com/en/product-security-incident-response'
    label: psirt@thalesgroup.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-01T23:03:32.770Z'
---

## Overview

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

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.