{"id":"CVE-2011-4503","aliases":["EUVD-2011-4429","GHSA-ffcg-78g8-hcrr"],"status":"published","title":"The UPnP IGD implementation in Broadcom Linux on the Sitecom WL-111 allows remote attackers to...","description":"The UPnP IGD implementation in Broadcom Linux on the Sitecom WL-111 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.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02094,"percentile":0.81771,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-16"],"published":"2011-11-22T11:00:00Z","modified":"2026-06-16T23:34:57Z","products":[{"vendor":"broadcom","product":"broadcom_linux"},{"vendor":"sitecom","product":"wl-111"}],"references":[{"url":"http://www.upnp-hacks.org/suspect.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.kb.cert.org/vuls/id/357851","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4503"},{"url":"https://github.com/advisories/GHSA-ffcg-78g8-hcrr"}],"sources":{"cve":[{"id":"CVE-2011-4503","description":"The UPnP IGD implementation in Broadcom Linux on the Sitecom WL-111 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.","status":"published","published":"2011-11-22T11:00:00Z","modified":"2024-09-16T19:56:04.725Z","updated_at":"2026-11-02T14:35:37.989579Z"}],"euvd":[{"id":"EUVD-2011-4429","description":"The UPnP IGD implementation in Broadcom Linux on the Sitecom WL-111 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.","status":"published","published":"2011-11-22T11:00:00Z","modified":"2024-09-16T19:56:04Z","updated_at":"2026-11-03T00:55:18.708292Z"}],"ghsa":[{"id":"GHSA-ffcg-78g8-hcrr","title":"The UPnP IGD implementation in Broadcom Linux on the Sitecom WL-111 allows remote attackers to...","description":"The UPnP IGD implementation in Broadcom Linux on the Sitecom WL-111 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.","status":"published","published":"2022-05-17T05:16:42Z","modified":"2023-01-28T05:03:49Z","updated_at":"2026-11-02T14:44:03.106355Z"}],"nvd":[{"id":"CVE-2011-4503","description":"The UPnP IGD implementation in Broadcom Linux on the Sitecom WL-111 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.","status":"published","published":"2011-11-22T11:55:05.967Z","modified":"2026-06-16T23:34:57.053Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-16"],"updated_at":"2026-11-02T14:02:10.769216Z"}]}}