{"cve":"CVE-2001-1431","nvd":{"published":"2001-10-08T04:00:00.000","modified":"2026-06-16T21:56:15.687","status":"Modified","description":"Nokia Firewall Appliances running IPSO 3.3 and VPN-1/FireWall-1 4.1 Service Pack 3, IPSO 3.4 and VPN-1/FireWall-1 4.1 Service Pack 4, and IPSO 3.4 or IPSO 3.4.1 and VPN-1/FireWall-1 4.1 Service Pack 5, when SYN Defender is configured in Active Gateway mode, does not properly rewrite the third packet of a TCP three-way handshake to use the NAT IP address, which allows remote attackers to gain sensitive information.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://www.kb.cert.org/vuls/id/258731","https://exchange.xforce.ibmcloud.com/vulnerabilities/8293","http://www.kb.cert.org/vuls/id/258731","https://exchange.xforce.ibmcloud.com/vulnerabilities/8293"],"products":["checkpoint:firewall-1","checkpoint:vpn-1","nokia:firewall_appliance"],"source":"nvd","synced_at":"2026-10-19T19:33:02.361923049+00:00"},"epss":{"cve":"CVE-2001-1431","score":0.01302,"percentile":0.70484,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}