Vulnerability · Published Oct 1, 2026 · Assigned by THA-PSIRT

CVE-2026-18397SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability

Critical 9.4

In plain English

A critical-severity security flaw in SConnect from Thales. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 4.0)9.4Critical

Exploit odds (30 days)0.3%top 71.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Thales	SConnect	0 – before 2.16.1.0

Weakness: CWE-347, CWE-130, CWE-457, CWE-252 · 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

References

https://www.thalesgroup.com/en/product-security-incident-response vendor-advisory