CVE-2026-18397 (GCVE-0-2026-18397)

Vulnerability from cvelistv5 – Published: 2026-10-01 21:49 – Updated: 2026-10-01 21:49
VLAI
Title
SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability
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 leverages an unrestricted messaging interface between an attacker-controlled web page and the native host, allowing malicious input to bypass security checks.
Severity
9.4 (Critical)
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-347 - Improper verification of cryptographic signature
  • CWE-130 - Improper handling of length parameter inconsistency
  • CWE-457 - Use of uninitialized variable
  • CWE-252 - Unchecked return value
Assigner
References
Impacted products
Vendor Product Version
Thales SConnect Affected: 0 , < 2.16.1.0 (custom)
Create a notification for this product.
Date Public
2026-10-01 22:10
Credits
Thales would like to thank James Arnott from Bay Area Labs for his coordinated disclosure and valuable contribution.
Show details on NVD website
To clipboard 

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          "type": "finder",
          "value": "Thales would like to thank James Arnott from Bay Area Labs for his coordinated disclosure and valuable contribution."
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      "impacts": [
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              "value": "CAPEC-475 Signature Spoofing by Improper Validation"
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        {
          "capecId": "CAPEC-47",
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              "lang": "en",
              "value": "CAPEC-47 Buffer Overflow via Parameter Expansion"
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          "capecId": "CAPEC-463",
          "descriptions": [
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              "lang": "en",
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            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
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            "providerUrgency": "NOT_DEFINED",
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            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
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        {
          "descriptions": [
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              "description": "CWE-252 Unchecked return value",
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              "type": "CWE"
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      "providerMetadata": {
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        "orgId": "9d5917ae-205d-4ae5-8749-1f49479b1395",
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      "references": [
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          "tags": [
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          "url": "https://www.thalesgroup.com/en/product-security-incident-response"
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      "source": {
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    "cveId": "CVE-2026-18397",
    "datePublished": "2026-10-01T21:49:42.379Z",
    "dateReserved": "2026-07-30T14:55:56.425Z",
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    "state": "PUBLISHED"
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