{"id":"CVE-2026-81433","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-81433","generatedAt":"2026-10-28T02:59:04.732Z","title":"A stack-based buffer overflow vulnerability in WatchGuard Fireware OS's DHCP fingerprinting daemon (fingerd) allows an unauthenticated attacker with adjacent network access to execute arbitrary code or crash the process by sending a specially crafted…","description":"A stack-based buffer overflow vulnerability in WatchGuard Fireware OS's DHCP fingerprinting daemon (fingerd) allows an unauthenticated attacker with adjacent network access to execute arbitrary code or crash the process by sending a specially crafted DHCP packet.","published":"2026-09-30T00:16:36.000Z","lastModified":"2026-10-01T04:18:21.000Z","status":"Deferred","sourceIdentifier":"5d1c2695-1a31-4499-88ae-e847036fd7e3","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/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-120","CWE-121","CWE-787"],"affected":[],"epss":{"score":0.00204,"percentile":0.10281,"date":"2026-10-26","history":[{"date":"2026-09-30","score":0.00198,"percentile":0.08613}]},"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 (0.20%). 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":"2026-09-30T00:16:36.000Z","detail":{"score":"8.7","severity":"HIGH","publishedAt":"2026-09-30T00:16:36.150Z"},"summary":"New CVE, high severity (CVSS 8.7)."}],"references":[{"url":"https://psirt.watchguard.com/CVE-2026-81433","source":"5d1c2695-1a31-4499-88ae-e847036fd7e3"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-81433","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."}