What is CVE-2026-124577?

CVE-2026-124577 is a critical-severity vulnerability in Intelbras Sg 2404 Poe L2+, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-11-09.

How severe is CVE-2026-124577?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Intelbras Sg 2404 Poe L2+

CVE-2026-124577

A weakness has been identified in Intelbras SG 2404 PoE L2+ 1.00.70/1.00.72. The affected element is an unknown function of the file /EXCU_SHELL of the component Web Management Interface. Executing a manipulation can lead to improper authentication. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.00.74 is sufficient to fix this issue. Upgrading the affected component is advised.

Vulnerability class: Broken Authentication

Published 2026-11-09 · last modified 2026-11-09.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Intelbras Sg 2404 Poe L2+ — versions 1.00.70, 1.00.72

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

vuldb.com/vuln/432923 (vdb-entry)
vuldb.com/vuln/432923/cti (signature, permissions-required)
vuldb.com/cve/CVE-2026-124577 (third-party-advisory)
vuldb.com/submit/1038184 (third-party-advisory)

Frequently asked questions

What is CVE-2026-124577?: CVE-2026-124577 is a critical-severity vulnerability in Intelbras Sg 2404 Poe L2+, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-11-09.
How severe is CVE-2026-124577?: Critical severity. CVSS v3 base score is 9.8 out of 10.