CVE-2026-39031

UNKNOWN 0.0

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	n/a
Product	n/a
Published	Jun 26, 2026
Last Updated	Jun 26, 2026

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Affected Versions

n/a / n/a

n/a

References

NVD ↗ CVE.org ↗ EPSS Data ↗

usermode.net: https://usermode.net/cve/lansweeper_lsrunase2_lsencrypt2_cve.pdf github.com: https://github.com/user6400/cve-2026-39031-lansweeper-lsrunase2-lsencrypt2