{"schemaVersion":3,"id":"CVE-2026-2336","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A privilege escalation vulnerability in Microchip IStaX allows an authenticated low-privileged user to recover a shared per-device cookie secret from their own webstax_auth session cookie and forge a new cookie with administrative privileges.This issue affects IStaX before 2026.03.","dates":{"published":"2026-04-16T17:02:06.352Z","modified":"2026-04-16T17:34:39.672Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"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:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:H","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:H/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":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00232,"percentile":0.13223,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00232},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00232,"percentile":0.13223}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00232,"percentile":0.13223}]},"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-331","name":"Insufficient Entropy","description":"The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/331.html"}],"affected":[{"vendor":"microchip","product":"istax","name":"istax","label":"istax","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2026.03","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2026.03","eol":null,"hubHref":"/vendor/microchip/istax"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-potential-product-security-vulnerabilities/istax-privilege-escalation-via-weak-cookie-authentication","label":"www.microchip.com/en-us/…","hostname":"www.microchip.com","tags":["Vendor Advisory","Broken Link"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-04-16T17:02:06.352Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-16T17:34:39.672Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T01:07:01.777Z","stale":false,"partial":false}}