CVE-2026-39031

{"id": "CVE-2026-39031", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39031", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-29T13:37:09.839096Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}]}], "published": "2026-06-26T21:16:33.600", "references": [{"url": "https://github.com/user6400/cve-2026-39031-lansweeper-lsrunase2-lsencrypt2", "source": "cve@mitre.org"}, {"url": "https://usermode.net/cve/lansweeper_lsrunase2_lsencrypt2_cve.pdf", "source": "cve@mitre.org"}, {"url": "https://github.com/user6400/cve-2026-39031-lansweeper-lsrunase2-lsencrypt2", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://usermode.net/cve/lansweeper_lsrunase2_lsencrypt2_cve.pdf", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-321"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-06-29T19:27:07.477", "sourceIdentifier": "cve@mitre.org"}