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    CVE-2018-3955

    An exploitable operating system command injection exists in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmware Version 3.0.04). Specially crafted entries to network configuration information can cause execution of arbitrary system commands, resulting in full control of the device. An attacker can send an authenticated HTTP request to trigger this vulnerability. Data entered into the 'Domain Name' input field through the web portal is submitted to apply.cgi as the value to the 'wan_domain' POST parameter. The wan_domain data goes through the nvram_set process described above. When the 'preinit' binary receives the SIGHUP signal it enters a code path that calls a function named 'set_host_domain_name' from its libshared.so shared object.

    Published:Oct 17, 2018
    Last Modified:Nov 21, 2024
    EPS:Oct 17, 2018
    EPSS Score:0.01997
    CVSS Score:7.2

    Affected Products

    Vendor
    Linksys
    Product
    E1200
    Vendor
    Linksys
    Product
    E1200 Firmware
    Vendor
    Linksys
    Product
    E2500
    Vendor
    Linksys
    Product
    E2500 Firmware

    Exploits

    https://talosintelligence.com/vulnerability_reports/TALOS-2018-0625https://talosintelligence.com/vulnerability_reports/TALOS-2018-0625

    Related CVEs

    CVE-2025-60690 (CVSS 8.8) — A stack-based buffer overflow exists in the get_merge_ipaddr function of the httpd binary on Linksys E1200 v2 …
    CVE-2025-60689 (CVSS 5.4) — An unauthenticated command injection vulnerability exists in the Start_EPI function of the httpd binary on Lin…
    CVE-2025-60692 (CVSS 8.4) — A stack-based buffer overflow vulnerability exists in the libshared.so library of Cisco Linksys E1200 v2 route…
    CVE-2025-60694 (CVSS 7.5) — A stack-based buffer overflow exists in the validate_static_route function of the httpd binary on Linksys E120…
    CVE-2025-60691 (CVSS 8.8) — A stack-based buffer overflow exists in the httpd binary of Linksys E1200 v2 routers (Firmware E1200_v2.0.11.0…
    CVE-2025-60693 (CVSS 6.5) — A stack-based buffer overflow exists in the get_merge_mac function of the httpd binary on Linksys E1200 v2 rou…
    CVE-2013-3307 (CVSS 8.3) — Linksys E1000 devices through 2.1.02, E1200 devices before 2.0.05, and E3200 devices through 1.0.04 allow OS c…
    CVE-2025-34037 (CVSS 10) — An OS command injection vulnerability exists in various models of E-Series Linksys routers via the /tmUnblock.…
    CVE-2022-38555 (CVSS 9.8) — Linksys E1200 v1.0.04 is vulnerable to Buffer Overflow via ej_get_web_page_name.…
    CVE-2018-3953 (CVSS 7.2) — Devices in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmwa…

    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