{"id":"CVE-2013-1235","aliases":["EUVD-2013-1275","GHSA-ffwh-46r8-rg8g"],"status":"published","title":"Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of...","description":"Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of terminated TELNET sessions, which allows remote attackers to cause a denial of service (TELNET outage) by making many TELNET connections and improperly ending these connections, aka Bug ID CSCug35507.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01232,"percentile":0.69177,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2013-05-04T01:00:00Z","modified":"2026-06-16T23:51:03Z","products":[{"vendor":"cisco","product":"2000_wireless_lan_controller"},{"vendor":"cisco","product":"2100_wireless_lan_controller"},{"vendor":"cisco","product":"2106_wireless_lan_controller"},{"vendor":"cisco","product":"2112_wireless_lan_controller"},{"vendor":"cisco","product":"2125_wireless_lan_controller"},{"vendor":"cisco","product":"2500_wireless_lan_controller"},{"vendor":"cisco","product":"2504_wireless_lan_controller"},{"vendor":"cisco","product":"4100_wireless_lan_controller"},{"vendor":"cisco","product":"4400_wireless_lan_controller"},{"vendor":"cisco","product":"4402_wireless_lan_controller"},{"vendor":"cisco","product":"4404_wireless_lan_controller"},{"vendor":"cisco","product":"5500_wireless_lan_controller"},{"vendor":"cisco","product":"7500_wireless_lan_controller"},{"vendor":"cisco","product":"8500_wireless_lan_controller"},{"vendor":"cisco","product":"airespace_4000_wireless_lan_controller"},{"vendor":"cisco","product":"wireless_lan_controller"}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1235","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-1235"},{"url":"https://github.com/advisories/GHSA-ffwh-46r8-rg8g"}],"sources":{"cve":[{"id":"CVE-2013-1235","description":"Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of terminated TELNET sessions, which allows remote attackers to cause a denial of service (TELNET outage) by making many TELNET connections and improperly ending these connections, aka Bug ID CSCug35507.","status":"published","published":"2013-05-04T01:00:00Z","modified":"2024-09-17T02:58:04.324Z","updated_at":"2026-11-02T14:34:58.882751Z"}],"euvd":[{"id":"EUVD-2013-1275","description":"Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of terminated TELNET sessions, which allows remote attackers to cause a denial of service (TELNET outage) by making many TELNET connections and improperly ending these connections, aka Bug ID CSCug35507.","status":"published","published":"2013-05-04T01:00:00Z","modified":"2024-09-17T02:58:04Z","updated_at":"2026-11-03T00:28:35.481673Z"}],"ghsa":[{"id":"GHSA-ffwh-46r8-rg8g","title":"Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of...","description":"Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of terminated TELNET sessions, which allows remote attackers to cause a denial of service (TELNET outage) by making many TELNET connections and improperly ending these connections, aka Bug ID CSCug35507.","status":"published","published":"2022-05-17T05:10:26Z","modified":"2023-01-28T05:03:28Z","updated_at":"2026-11-02T14:43:58.944932Z"}],"nvd":[{"id":"CVE-2013-1235","description":"Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of terminated TELNET sessions, which allows remote attackers to cause a denial of service (TELNET outage) by making many TELNET connections and improperly ending these connections, aka Bug ID CSCug35507.","status":"published","published":"2013-05-04T03:24:41.72Z","modified":"2026-06-16T23:51:03.947Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:02:25.704053Z"}]}}