EXPOSURES › CVE-2026-31848

▸ RECOMMENDED ACTION  Critical severity — schedule patching of the affected products.

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.