{"id":"CVE-2026-40140","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-40140","generatedAt":"2026-10-28T11:55:40.270Z","title":"BeyondTrust Remote Support and Privileged Remote Access contain a high-severity pre-authentication vulnerability in the network communication subsystem.","description":"BeyondTrust Remote Support and Privileged Remote Access contain a high-severity pre-authentication vulnerability in the network communication subsystem. Insufficient validation of client-supplied input may allow an unauthenticated remote attacker to trigger a denial-of-service condition affecting appliance availability.","published":"2026-07-06T17:16:31.000Z","lastModified":"2026-07-07T18:40:16.000Z","status":"Analyzed","sourceIdentifier":"13061848-ea10-403d-bd75-c83a022c2891","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-400"],"affected":["beyondtrust/privileged remote access","beyondtrust/remote support"],"epss":{"score":0.00648,"percentile":0.50849,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.65%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.beyondtrust.com/trust-center/security-advisories/bt26-03","tags":["Vendor Advisory"],"source":"13061848-ea10-403d-bd75-c83a022c2891"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-40140","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}