{"id":"CVE-2001-1183","aliases":["EUVD-2001-1164","GHSA-xfqr-hx55-mjcw"],"status":"published","title":"PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of...","description":"PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of service (crash) via a malformed packet.","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":0.0382,"percentile":0.90134,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2001-07-12T04:00:00Z","modified":"2026-06-16T21:55:44Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://www.osvdb.org/802","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.kb.cert.org/vuls/id/656315","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Patch","Third Party Advisory","US Government Resource"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/6835","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.cisco.com/warp/public/707/PPTP-vulnerability-pub.html","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/3022","tags":["vdb-entry","x_refsource_BID","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2001-1183"},{"url":"https://github.com/advisories/GHSA-xfqr-hx55-mjcw"}],"sources":{"cve":[{"id":"CVE-2001-1183","description":"PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of service (crash) via a malformed packet.","status":"published","published":"2002-06-25T04:00:00Z","modified":"2024-08-08T04:44:08.238Z","updated_at":"2026-11-02T14:34:42.680977Z"}],"euvd":[{"id":"EUVD-2001-1164","description":"PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of service (crash) via a malformed packet.","status":"published","published":"2002-06-25T04:00:00Z","modified":"2024-08-08T04:44:08Z","updated_at":"2026-11-03T01:14:48.04102Z"}],"ghsa":[{"id":"GHSA-xfqr-hx55-mjcw","title":"PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of...","description":"PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of service (crash) via a malformed packet.","status":"published","published":"2022-04-30T18:17:30Z","modified":"2023-01-30T05:05:29Z","updated_at":"2026-11-02T14:47:17.308018Z"}],"nvd":[{"id":"CVE-2001-1183","description":"PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of service (crash) via a malformed packet.","status":"published","published":"2001-07-12T04:00:00Z","modified":"2026-06-16T21:55:44.76Z","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":"2026-11-02T14:00:40.041412Z"}]}}