{"id":"CVE-2026-43856","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-43856","generatedAt":"2026-10-28T01:19:36.144Z","title":"A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code execution via a path longer than 1024 bytes.","description":"A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code execution via a path longer than 1024 bytes.","published":"2026-10-20T10:17:07.000Z","lastModified":"2026-10-20T19:31:00.000Z","status":"Deferred","sourceIdentifier":"5f57b9bf-260d-4433-bf07-b6a79e9bb7d4","cvss":{"version":"4.0","score":8.6,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/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-121"],"affected":[],"epss":{"score":0.00656,"percentile":0.51139,"date":"2026-10-26","history":[{"date":"2026-10-20","score":0.00712,"percentile":0.52793}]},"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 (0.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-20T10:17:07.000Z","detail":{"score":"8.6","severity":"HIGH","publishedAt":"2026-10-20T10:17:06.640Z"},"summary":"New CVE, high severity (CVSS 8.6)."}],"references":[{"url":"https://www.advantech.com/en/security-advisory","source":"5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"},{"url":"https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149","source":"5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43856","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."}