CVE-2026-39031

MediumCVSS 5.5/10Last modified Jun 29, 2026

Description

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-321

Affected software

No affected versions have been published.

Timeline

Published: Jun 26, 2026
Last modified: Jun 29, 2026
NVD status: Deferred

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