VULNERABILITY INTELLIGENCE
CVE-2026-39031
CVSS score5.5 MEDIUM
EPSS probability0.09%
CISA KEVNot currently listed
Published2026-06-26
Last modified2026-06-29
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-321