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    CVE-2002-1071

    ZyXEL Prestige 642R allows remote attackers to cause a denial of service in the Telnet, FTP, and DHCP services (crash) via a TCP packet with both the SYN and ACK flags set.

    Published:Aug 31, 2002
    Last Modified:Apr 16, 2026
    EPS:Aug 31, 2002
    EPSS Score:0.06377
    CVSS Score:5

    Affected Products

    Vendor
    Zyxel
    Product
    Prestige

    Exploits

    http://www.securityfocus.com/bid/5034http://www.securityfocus.com/bid/5034https://www.exploit-db.com/exploits/21561

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2005-0328 (CVSS 5) — Zyxel P310, P314, P324 and Netgear RT311, RT314 running the latest firmware, allows remote attackers on the WA…
    CVE-2004-1540 (CVSS 5) — ZyXEL Prestige 623, 650, and 652 HW Routers, and possibly other versions, with HTTP Remote Administration enab…
    CVE-2004-1684 (CVSS 5) — Zyxel P681 running ZyNOS Vt020225a contains portions of memory in an ARP request, which allows remote attacker…
    CVE-2004-0670 (CVSS 5) — Prestige 650HW-31 running Rompager 4.7 software allows remote attackers to cause a denial of service (device r…
    CVE-2002-1072 (CVSS 5) — ZyXEL Prestige 642R 2.50(FA.1) and Prestige 310 V3.25(M.01), allows remote attackers to cause a denial of serv…
    CVE-2001-1135 (CVSS 7.5) — ZyXEL Prestige 642R and 642R-I routers do not filter the routers' Telnet and FTP ports on the external WAN int…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High