{"id":"CVE-2008-1618","aliases":["EUVD-2008-1619","GHSA-pv8j-6vmm-x69g"],"status":"published","title":"The PPTP VPN service in Watchguard Firebox before 10, when performing the MS-CHAPv2...","description":"The PPTP VPN service in Watchguard Firebox before 10, when performing the MS-CHAPv2 authentication handshake, generates different error codes depending on whether the username is valid or invalid, which allows remote attackers to enumerate valid usernames.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01738,"percentile":0.7786,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2008-04-07T18:00:00Z","modified":"2026-06-16T22:52:06Z","products":[{"vendor":"watchguard","product":"firebox_pptp_vpn"}],"references":[{"url":"http://www.mwrinfosecurity.com/publications/mwri_watchguard-firebox-pptp-vpn-user-enumeration-advisory_2008-04-04.pdf","tags":["x_refsource_MISC","x_transferred","Exploit","Patch"]},{"url":"http://www.osvdb.org/44218","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2008/1152/references","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/28619","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/41683","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://secunia.com/advisories/29708","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id?1019796","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2008-1618"},{"url":"https://github.com/advisories/GHSA-pv8j-6vmm-x69g"}],"sources":{"cve":[{"id":"CVE-2008-1618","description":"The PPTP VPN service in Watchguard Firebox before 10, when performing the MS-CHAPv2 authentication handshake, generates different error codes depending on whether the username is valid or invalid, which allows remote attackers to enumerate valid usernames.","status":"published","published":"2008-04-07T18:00:00Z","modified":"2024-08-07T08:24:42.935Z","updated_at":"2026-11-02T14:34:47.71012Z"}],"euvd":[{"id":"EUVD-2008-1619","description":"The PPTP VPN service in Watchguard Firebox before 10, when performing the MS-CHAPv2 authentication handshake, generates different error codes depending on whether the username is valid or invalid, which allows remote attackers to enumerate valid usernames.","status":"published","published":"2008-04-07T18:00:00Z","modified":"2024-08-07T08:24:42Z","updated_at":"2026-11-03T01:39:00.729717Z"}],"ghsa":[{"id":"GHSA-pv8j-6vmm-x69g","title":"The PPTP VPN service in Watchguard Firebox before 10, when performing the MS-CHAPv2...","description":"The PPTP VPN service in Watchguard Firebox before 10, when performing the MS-CHAPv2 authentication handshake, generates different error codes depending on whether the username is valid or invalid, which allows remote attackers to enumerate valid usernames.","status":"published","published":"2022-05-01T23:41:51Z","modified":"2023-01-31T05:05:32Z","cwes":["CWE-200"],"updated_at":"2026-11-02T14:48:52.392041Z"}],"nvd":[{"id":"CVE-2008-1618","description":"The PPTP VPN service in Watchguard Firebox before 10, when performing the MS-CHAPv2 authentication handshake, generates different error codes depending on whether the username is valid or invalid, which allows remote attackers to enumerate valid usernames.","status":"published","published":"2008-04-07T18:44:00Z","modified":"2026-06-16T22:52:06.64Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:01:25.857543Z"}]}}