CVE-2026-39031
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.5epss 0.1%
from disclosure to weapon0 days
Published on NVDJun 26
1st PoCJun 22
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
n/a · n/apublic PoCs found — 1
githubgithub.com/user6400/cve-2026-39031-lansweeper-lsrunase2-lsencrypt2★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.