# CVE-2026-121609: Qihoo 360 Whole Home Router M5 Boot Script mpt start hard-coded credentials

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

A vulnerability was identified in Qihoo 360 Whole Home Router M5 4.0.17.1566. This issue affects the function Home of the file /etc/init.d/mpt of the component Boot Script. The manipulation leads to hard-coded credentials. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Qihoo 360 / Whole Home Router M5: 4.0.17.1566 (affected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 10 (critical); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P; source: CNA: VulDB

- CVSS 3.1: 10 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C; source: CNA: VulDB

- CVSS 3.0: 10 (critical); CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/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:ND/RC:C; source: CNA: VulDB

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-798, CWE-259

## Exploit evidence

- exploit: https://gist.github.com/gajgdm6-cpu/c8c3bbdeb51c076317834b41c3a919f2 (CNA: VulDB)

## References

- https://vuldb.com/vuln/430446 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/430446/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-121609 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1023264 (CNA: VulDB; third-party-advisory)

- https://gist.github.com/gajgdm6-cpu/c8c3bbdeb51c076317834b41c3a919f2 (CNA: VulDB; exploit)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-121609; retrieved 2026-11-04; source updated 2026-11-04

Revision: e1a2770ca48d7342f2f798bcf8554d4ae15a9e2bcbefc17b9b96332810d33d8c

Canonical: https://y2.dev/cve/CVE-2026-121609

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