CVE-2026-53632CWE-522CWE-73

NTLMv2 hash disclosure via UNC path handling on Windows

Medium · published June 22, 2026

CVSS v4.0
5.5
EPSS
0%
Percentile
34.0
In the wild
Unconfirmed
What it is

launch-editor allows users to open files with line numbers in editor from Node.js. Prior to 2.14.1, the launch-editor NPM package accesses arbitrary paths including Windows UNC paths. When a UNC path is opened, Windows automatically attempts NTLM authentication to the remote host, causing the user’s NTLMv2 password hash to be leaked to an attacker-controlled SMB server. This can result in credential compromise through offline hash cracking. This vulnerability is fixed in 2.14.1.

The record
Technical detail
CVSS v4.0
5.5 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
EPSS
0.00408 · 34.0th percentile
Weaknesses
CWE-522 · Insufficiently Protected Credentials; CWE-73 · External Control of File Name or Path
Published
2026-06-22T15:54Z
EPSS history
Timeline
  • 22 JUN 15:54Z
    NTLMv2 hash disclosure via UNC path handling on Windows
    cvelistv5