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CVE-2026-39031

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:794adc27138fe9d2de7a68c77e496abd9471f07f786b0e8f8ea144833c7f5d4d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-321","description":"CWE-321 Use of Hard-coded Cryptographic Key","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-321","description":"CWE-321 Use of Hard-coded Cryptographic Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

4 source assertions
{"url":"https://github.com/user6400/cve-2026-39031-lansweeper-lsrunase2-lsencrypt2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/user6400/cve-2026-39031-lansweeper-lsrunase2-lsencrypt2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/adp/0/references/1
{"url":"https://usermode.net/cve/lansweeper_lsrunase2_lsencrypt2_cve.pdf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://usermode.net/cve/lansweeper_lsrunase2_lsencrypt2_cve.pdf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cc866ad3e136819796711a8d2d14d27d92177ca1fca04b711ef840c436ac5273 · sha256:894f639cffc86f37… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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