# CVE-2026-124577: Intelbras SG 2404 PoE L2+ Web Management EXCU_SHELL improper authentication

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Intelbras / SG 2404 PoE L2+: 1.00.70 (affected); 1.00.72 (affected); 1.00.74 (unaffected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 9.3 (critical); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P; source: CNA: VulDB

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C; source: CNA: VulDB

- CVSS 3.0: 9.8 (critical); CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C; source: CNA: VulDB

- CVSS 2.0: 10 (critical); AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:OF/RC:C; source: CNA: VulDB

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-287

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://vuldb.com/vuln/432923 (CNA: VulDB; vdb-entry)

- https://vuldb.com/vuln/432923/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-124577 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1038184 (CNA: VulDB; third-party-advisory)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-124577; retrieved 2026-11-09; source updated 2026-11-09

Revision: 34e5d43c447428cdc051c7b8f7d289b2dac5953392ab80b9e865fe05e4e4c4f7

Canonical: https://y2.dev/cve/CVE-2026-124577

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