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    CVE-2006-2559

    Linksys WRT54G Wireless-G Broadband Router allows remote attackers to bypass access restrictions and conduct unauthorized operations via a UPnP request with a modified InternalClient parameter, which is not validated, as demonstrated by using AddPortMapping to forward arbitrary traffic.

    Published:May 24, 2006
    Last Modified:Apr 16, 2026
    EPS:May 24, 2006
    EPSS Score:0.00552
    CVSS Score:7.5

    Affected Products

    Vendor
    Linksys
    Product
    Wrt54g
    Vendor
    Linksys
    Product
    Wrt54g V5

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2024-8408 (CVSS 5.3) — A vulnerability was found in Linksys WRT54G 4.21.5. It has been rated as critical. Affected by this issue is t…
    CVE-2024-41281 (CVSS 8.8) — Linksys WRT54G v4.21.5 has a stack overflow vulnerability in get_merge_mac function.…
    CVE-2011-4499 (CVSS 7.5) — The UPnP IGD implementation in the Broadcom UPnP stack on the Cisco Linksys WRT54G with firmware before 4.30.5…
    CVE-2008-1263 (CVSS 4) — The Linksys WRT54G router stores passwords and keys in cleartext in the Config.bin file, which might allow rem…
    CVE-2008-1264 (CVSS 7.5) — The Linksys WRT54G router has "admin" as its default FTP password, which allows remote attackers to access sen…
    CVE-2008-1265 (CVSS 7.8) — The Linksys WRT54G router allows remote attackers to cause a denial of service (device restart) via a long use…
    CVE-2008-1247 (CVSS 10) — The web interface on the Linksys WRT54g router with firmware 1.00.9 does not require credentials when invoking…
    CVE-2008-1268 (CVSS 10) — The FTP server on the Linksys WRT54G 7 router with 7.00.1 firmware does not verify authentication credentials,…
    CVE-2006-5202 (CVSS 5) — Linksys WRT54g firmware 1.00.9 does not require credentials when making configuration changes, which allows re…
    CVE-2005-2799 (CVSS 7.5) — Buffer overflow in apply.cgi in Linksys WRT54G 3.01.03, 3.03.6, and possibly other versions before 4.20.7, all…

    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