cvedb.io
CVE-2026-31848
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-03-23T13:16:30.490 · Last modified 2026-06-17T10:34:37.380

Summary

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. This allows unauthorized administrative access to protected endpoints.

Affected products

nexxtsolutions — nebula300plus_firmware

Does this affect you?

Add your gear to cvedb and we'll alert you only when nexxtsolutions ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.