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    CVE-2026-31848

    Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication.

    Published:Mar 23, 2026
    Last Modified:Aug 10, 2026
    EPS:Mar 23, 2026
    EPSS Score:0.00281
    CVSS Score:9.8

    Affected Products

    Vendor
    Nexxtsolutions
    Product
    Nebula300+
    Vendor
    Nexxtsolutions
    Product
    Nebula300plus
    Vendor
    Nexxtsolutions
    Product
    Nebula300plus Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-37 Retrieve Embedded Sensitive Data

    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