PT-2026-52970 · Undefined · Undefined

Published 2026-06-26 · Updated 2026-06-26 · CVE-2026-39031

Mitre

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Lansweeper lsrunase 2.0 and lsencrypt 2.0 use RC4 encryption with a hardcoded 142-byte static key array to encrypt credentials. An 8-character prefix is stored in cleartext alongside the ciphertext. This allows an attacker with local access to recover any encrypted password to plaintext using a single SHA-1 hash and RC4 decryption operation, with no brute force required.

Exploit

Fix

Weakness Enumeration

CWE-321

Related Identifiers

CVE-2026-39031

Affected Products

Undefined

References · 3

• 🔥 https://github.com/user6400/cve-2026-39031-lansweeper-lsrunase2-lsencrypt2 · Exploit
• 🔥 https://usermode.net/cve/lansweeper_lsrunase2_lsencrypt2_cve.pdf · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-39031 · Security Note