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    CVE-2026-121615

    A vulnerability was determined in Linksys E5600 1.1.0.26. Affected is an unknown function of the file /cgi-bin/mesh_login.cgi of the component Login Handler. Executing a manipulation can lead to improper authentication. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.

    Published:Nov 4, 2026
    Last Modified:Nov 4, 2026
    EPS:Nov 4, 2026
    EPSS Score:
    CVSS Score:10

    Affected Products

    Vendor
    Linksys
    Product
    E5600
    Vendor
    Linksys
    Product
    E5600 Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    Related CVEs

    CVE-2026-121618 (CVSS 5.5) — A weakness has been identified in Linksys E5600 1.1.0.26. This affects an unknown part of the file /cgi-bin/fq…
    CVE-2026-121617 (CVSS 7.7) — A security flaw has been discovered in Linksys E5600 1.1.0.26. Affected by this issue is the function init_mul…
    CVE-2026-121616 (CVSS 5.5) — A vulnerability was identified in Linksys E5600 1.1.0.26. Affected by this vulnerability is the function strcp…
    CVE-2025-29229 (CVSS 9.8) — linksys E5600 V1.1.0.26 is vulnerable to command injection in the function ddnsStatus.…
    CVE-2025-29228 (CVSS 9.8) — Linksys E5600 V1.1.0.26 is vulnerable to command injection in the runtime.macClone function via the mc.ip para…
    CVE-2025-29231 (CVSS 6.1) — A stored cross-site scripting (XSS) vulnerability in the page_save component of Linksys E5600 V1.1.0.26 allows…
    CVE-2025-9146 (CVSS 7.5) — A flaw has been found in Linksys E5600 1.1.0.26. The affected element is the function verify_gemtek_header of …
    CVE-2025-45488 (CVSS 9.8) — Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus …
    CVE-2025-45490 (CVSS 9.8) — Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus …
    CVE-2025-45491 (CVSS 9.8) — Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus …

    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