Critical severity · published Oct 1, 2026
CVE-2026-18397
SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability
9.4
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
SConnect · Thales
before 2.16.1.0 · source: vendor