CVE-2026-18397CWE-130CWE-252CWE-347CWE-457

CVE-2026-18397

published October 2, 2026

CVSS
9.4
EPSS
0%
Percentile
25.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
9.4 · NONE
CVSS v4.0
9.4 · 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
EPSS
0.00337 · 25.8th percentile
Weaknesses
CWE-130 · Improper Handling of Length Parameter Inconsistency; CWE-252 · Unchecked Return Value; CWE-347 · Improper Verification of Cryptographic Signature; CWE-457 · Use of Uninitialized Variable
Published
2026-10-02T02:17Z
References (1)
EPSS history
Timeline
  • 03 OCT 03:42Z
    EPSS moved — → 0%
    epss
  • 01 OCT 21:49Z
    SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability
    cvelistv5