CVEvulnerability
CVE-2026-39031
5.5 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-06-26
- Last modified
- 2026-06-29
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-321
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.
Related
Weakness · CWE (1)
- CWE-321 Use of Hard-coded Cryptographic Key weakness
References
- https://github.com/user6400/cve-2026-39031-lansweeper-lsrunase2-lsencrypt2 github.com
- https://usermode.net/cve/lansweeper_lsrunase2_lsencrypt2_cve.pdf usermode.net
- https://github.com/user6400/cve-2026-39031-lansweeper-lsrunase2-lsencrypt2 github.com
- https://usermode.net/cve/lansweeper_lsrunase2_lsencrypt2_cve.pdf usermode.net