{"schemaVersion":3,"id":"CVE-2026-86105","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An improper authorization vulnerability in Fireware OS's Access Portal reverse proxy allows an authenticated, low-privileged Access Portal user to access other web applications they are not authorized for by sending a specially crafted request for a different resource which they are authorized to access.","dates":{"published":"2026-09-29T23:05:47.554Z","modified":"2026-09-30T15:28:13.566Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.1,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":6,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00308,"percentile":0.22324,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-09-30T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00308,"percentile":0.22324}],"last30":[{"date":"2026-09-30T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00308,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00308,"percentile":0.22324}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","description":"The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/22.html"},{"id":"CWE-176","name":"Improper Handling of Unicode Encoding","description":"The product does not properly handle when an input contains Unicode encoding.","type":"weakness","status":"Draft","abstraction":"Variant","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/176.html"},{"id":"CWE-285","name":"Improper Authorization","description":"The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/285.html"}],"affected":[{"vendor":"watchguard","product":"fireware","name":"fireware","label":"fireware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 12.0, < 12.5.21","noFixRecorded":false,"fixedIn":null},{"text":"≥ 12.12, < 12.12.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2025.0, < 2026.2.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2026.3, < 2026.3.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 12.0, < 12.5.21 | ≥ 12.12, < 12.12.3 | ≥ 2025.0, < 2026.2.3 | ≥ 2026.3, < 2026.3.2","eol":null,"hubHref":"/vendor/watchguard/fireware"},{"vendor":"watchguard","product":"fireware os","name":"Fireware OS","label":"fireware os","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2026.3, < 2026.3.2","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2025.0, < 2026.2.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 12.0, < 12.12.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 12.0, < 12.5.21","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2026.3, < 2026.3.2 | ≥ 2025.0, < 2026.2.3 | ≥ 12.0, < 12.12.3 | ≥ 12.0, < 12.5.21","eol":null,"hubHref":"/vendor/watchguard/fireware_os"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://psirt.watchguard.com/CVE-2026-86105","label":"psirt.watchguard.com/CVE-2026-86105","hostname":"psirt.watchguard.com","tags":["Vendor Advisory","Patch"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-29T23:05:47.554Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-30T15:28:13.566Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":28,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T07:15:40.744Z","stale":false,"partial":false}}