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
Affected Vendors & Products
References
History
Mon, 29 Jun 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Lansweeper
Lansweeper lsencrypt Lansweeper lsrunase |
|
| Vendors & Products |
Lansweeper
Lansweeper lsencrypt Lansweeper lsrunase |
Mon, 29 Jun 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Lansweeper Credential Storage RC4 Key Exposure |
Mon, 29 Jun 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Local Credential Disclosure via Hardcoded RC4 Key in Lansweeper lsrunase 2.0 and lsencrypt 2.0 | |
| Weaknesses | CWE-327 CWE-330 |
Mon, 29 Jun 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-321 | |
| Metrics |
cvssV3_1
|
Fri, 26 Jun 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Local Credential Disclosure via Hardcoded RC4 Key in Lansweeper lsrunase 2.0 and lsencrypt 2.0 | |
| Weaknesses | CWE-327 CWE-330 |
Fri, 26 Jun 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| References |
|
Status: PUBLISHED
Assigner: mitre
Published: 2026-06-26T00:00:00.000Z
Updated: 2026-06-29T13:37:17.723Z
Reserved: 2026-04-06T00:00:00.000Z
Link: CVE-2026-39031
Updated: 2026-06-29T13:35:05.929Z
No data.
No data.