{"id":"CVE-2008-5849","aliases":["EUVD-2008-5819","GHSA-2fwx-xc3r-67p8"],"status":"published","title":"Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used,...","description":"Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used, allows remote attackers to discover intranet IP addresses via a packet with a small TTL, which triggers an ICMP_TIMXCEED_INTRANS (aka ICMP time exceeded in-transit) response containing an encapsulated IP packet with an intranet address, as demonstrated by a TCP packet to the firewall management server on port 18264.","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":"2026-11-09","score":0.01618,"percentile":0.7621,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2009-01-06T17:00:00Z","modified":"2026-06-16T23:01:05Z","products":[{"vendor":"checkpoint","product":"vpn-1"}],"references":[{"url":"https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=\u0026solutionid=sk36321","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://secunia.com/advisories/32728","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/46645","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.portcullis-security.com/293.php","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.securityfocus.com/bid/32306","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://svn.wald.intevation.org/svn/openvas/trunk/openvas-plugins/scripts/checkpoint-vpn1-pat-information-disclosure.nasl","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"http://www.vupen.com/english/advisories/2008/3229","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2008-5849"},{"url":"https://github.com/advisories/GHSA-2fwx-xc3r-67p8"}],"sources":{"cve":[{"id":"CVE-2008-5849","description":"Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used, allows remote attackers to discover intranet IP addresses via a packet with a small TTL, which triggers an ICMP_TIMXCEED_INTRANS (aka ICMP time exceeded in-transit) response containing an encapsulated IP packet with an intranet address, as demonstrated by a TCP packet to the firewall management server on port 18264.","status":"published","published":"2009-01-06T17:00:00Z","modified":"2024-08-07T11:04:44.697Z","updated_at":"2026-11-02T14:34:43.943588Z"}],"euvd":[{"id":"EUVD-2008-5819","description":"Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used, allows remote attackers to discover intranet IP addresses via a packet with a small TTL, which triggers an ICMP_TIMXCEED_INTRANS (aka ICMP time exceeded in-transit) response containing an encapsulated IP packet with an intranet address, as demonstrated by a TCP packet to the firewall management server on port 18264.","status":"published","published":"2009-01-06T17:00:00Z","modified":"2024-08-07T11:04:44Z","updated_at":"2026-11-03T01:38:41.285261Z"}],"ghsa":[{"id":"GHSA-2fwx-xc3r-67p8","title":"Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used,...","description":"Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used, allows remote attackers to discover intranet IP addresses via a packet with a small TTL, which triggers an ICMP_TIMXCEED_INTRANS (aka ICMP time exceeded in-transit) response containing an encapsulated IP packet with an intranet address, as demonstrated by a TCP packet to the firewall management server on port 18264.","status":"published","published":"2022-05-17T02:16:59Z","modified":"2023-01-27T05:04:10Z","cwes":["CWE-200"],"updated_at":"2026-11-02T14:42:24.095154Z"}],"nvd":[{"id":"CVE-2008-5849","description":"Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used, allows remote attackers to discover intranet IP addresses via a packet with a small TTL, which triggers an ICMP_TIMXCEED_INTRANS (aka ICMP time exceeded in-transit) response containing an encapsulated IP packet with an intranet address, as demonstrated by a TCP packet to the firewall management server on port 18264.","status":"published","published":"2009-01-06T17:30:00.297Z","modified":"2026-06-16T23:01:05.957Z","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":"2026-11-02T14:01:30.411919Z"}]}}