{"schemaVersion":3,"id":"CVE-2001-1086","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"XDM in XFree86 3.3 and 3.3.3 generates easily guessable cookies using gettimeofday() when compiled with the HasXdmXauth option, which allows remote attackers to gain unauthorized access to the X display via a brute force attack.","dates":{"published":"2002-03-15T05:00:00.000Z","modified":"2024-08-08T04:44:07.287Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","computed":false,"selection":"backend-summary"},"metrics":[{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":7.5,"severity":"high","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.02844,"percentile":0.86485,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.02844},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02844,"percentile":0.86485}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02844,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02844,"percentile":0.86485}]},"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":[{"id":"REF_67C5BC0E81F9880A","name":"Exploit Reference (securityfocus.com)","source":"reference","url":"http://www.securityfocus.com/archive/1/194907","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"REF_749C95B1D0B02199","name":"Exploit Reference (securityfocus.com)","source":"reference","url":"http://www.securityfocus.com/bid/2985","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"20993","name":"XFree86 X11R6 3.3 XDM - Session Cookie Guessing","source":"exploit-database","url":"https://www.exploit-db.com/exploits/20993","maturity":"weaponized","reliabilityScore":0.8,"verified":true,"type":"remote","platforms":["unix"],"requiresAuth":null,"exploitdb":{"verified":true,"type":"remote","platform":"unix","file":"exploits/unix/remote/20993.c","codes":["CVE-2001-1086","OSVDB-11759"]},"metasploit":null}],"exploitCount":3,"weaknesses":[],"affected":[{"vendor":"xfree86_project","product":"x11r6","name":"x11r6","label":"x11r6","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"3.3","noFixRecorded":false,"fixedIn":null},{"text":"3.3.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"3.3 | 3.3.3","eol":null,"hubHref":"/vendor/xfree86_project/x11r6"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/6808","label":"exchange.xforce.ibmcloud.com/vulnerabilities/6808","hostname":"exchange.xforce.ibmcloud.com","tags":["VDB Entry","X Refsource XF"]},{"url":"http://online.securityfocus.com/archive/1/195008","label":"online.securityfocus.com/archive/1/195008","hostname":"online.securityfocus.com","tags":["Mailing List","X Refsource BUGTRAQ","Vendor Advisory"]},{"url":"http://www.securityfocus.com/archive/1/194907","label":"www.securityfocus.com/archive/1/194907","hostname":"www.securityfocus.com","tags":["Mailing List","X Refsource BUGTRAQ","Exploit","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/2985","label":"www.securityfocus.com/bid/2985","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Exploit","Patch","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2002-03-15T05:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-08T04:44:07.287Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":41,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T05:25:57.228Z","stale":false,"partial":false}}