EUVD-2026-14415
GHSA-7xw4-69gx-5gch
CVSS Vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3Description
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores administrative authentication material in the ecos_pw cookie using a reversible Base64-encoded format with a static suffix. An attacker who obtains or derives this cookie value can forge a valid administrative session and gain unauthorized access to the device.
Analysis
The Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 contains an authentication bypass vulnerability where administrative credentials are stored in the ecos_pw cookie using reversible Base64 encoding with a static suffix, allowing attackers who obtain this cookie to forge valid administrative sessions and gain unauthorized device access. The vulnerability affects a network appliance product line and represents a critical authentication control failure. …
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Remediation
Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.
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External POC / Exploit Code
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