{"schemaVersion":3,"id":"CVE-2011-4499","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The UPnP IGD implementation in the Broadcom UPnP stack on the Cisco Linksys WRT54G with firmware before 4.30.5, WRT54GS v1 through v3 with firmware before 4.71.1, and WRT54GS v4 with firmware before 1.06.1 allows remote attackers to establish arbitrary port mappings by sending a UPnP AddPortMapping action in a SOAP request to the WAN interface, related to an \"external forwarding\" vulnerability.","dates":{"published":"2011-11-22T11:00:00.000Z","modified":"2024-09-17T02:33:03.064Z","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":0.01309,"percentile":0.70393,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-22T00:00:00.000Z","baselineScore":0.01309},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.01309,"percentile":0.70393}],"last30":[{"date":"2026-09-22T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01309,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.01309,"percentile":0.70393}]},"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-16","name":"Configuration","description":"Weaknesses in this category are typically introduced during the configuration of the software.","type":"category","status":"Obsolete","abstraction":null,"likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/16.html"}],"affected":[{"vendor":"cisco","product":"linksys_wrt54g_router_firmware","name":"linksys wrt54g router firmware","label":"linksys_wrt54g_router_firmware","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 4.20.8","noFixRecorded":false,"fixedIn":null},{"text":"3.03.9","noFixRecorded":false,"fixedIn":null},{"text":"4.20.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 4.20.8 | 3.03.9 | 4.20.7","eol":null,"hubHref":"/vendor/cisco/linksys_wrt54g_router"},{"vendor":"cisco","product":"linksys_wrt54gs_router_firmware","name":"linksys wrt54gs router firmware","label":"linksys_wrt54gs_router_firmware","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 4.70.6","noFixRecorded":false,"fixedIn":null},{"text":"2.09.1","noFixRecorded":false,"fixedIn":null},{"text":"≤ 1.06","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 4.70.6 | 2.09.1 | ≤ 1.06","eol":null,"hubHref":"/vendor/cisco/linksys_wrt54gs_router"},{"vendor":"linksys","product":"wrt54g","name":"wrt54g","label":"wrt54g","ecosystem":null,"cpePart":"h","purl":null,"purlType":null,"versions":[{"text":"2.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"2.2","eol":null,"hubHref":"/vendor/linksys/wrt54g"},{"vendor":"linksys","product":"wrt54gs","name":"wrt54gs","label":"wrt54gs","ecosystem":null,"cpePart":"h","purl":null,"purlType":null,"versions":[{"text":"1.0","noFixRecorded":false,"fixedIn":null},{"text":"2.0","noFixRecorded":false,"fixedIn":null},{"text":"3.0","noFixRecorded":false,"fixedIn":null},{"text":"4.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.0 | 2.0 | 3.0 | 4.0","eol":null,"hubHref":"/vendor/linksys/wrt54gs"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://www.upnp-hacks.org/devices.html","label":"www.upnp-hacks.org/devices.html","hostname":"www.upnp-hacks.org","tags":["X Refsource MISC"]},{"url":"http://www.kb.cert.org/vuls/id/357851","label":"www.kb.cert.org/vuls/id/357851","hostname":"www.kb.cert.org","tags":["Third Party Advisory","X Refsource CERT VN","US Government Resource"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2011-11-22T11:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-17T02:33:03.064Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T20:15:08.675Z","stale":false,"partial":false}}