# CVE-2026-121607: Qihoo 360 D603-2/D600-2/D606-6/D706 iscm testspeed_command os command injection

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

A vulnerability was found in Qihoo 360 D603-2, D600-2, D606-6 and D706 up to 6.4.9. This affects the function testspeed_command of the file /fs2/bin/iscm. Performing a manipulation of the argument host results in os command injection. The attack may be initiated remotely. The exploit has been made public and could 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 / D603-2: 6.4.0 (affected); 6.4.1 (affected); 6.4.2 (affected); 6.4.3 (affected); 6.4.4 (affected); 6.4.5 (affected); 6.4.6 (affected); 6.4.7 (affected); 6.4.8 (affected); 6.4.9 (affected). Source: CNA: VulDB
- Qihoo 360 / D600-2: 6.4.0 (affected); 6.4.1 (affected); 6.4.2 (affected); 6.4.3 (affected); 6.4.4 (affected); 6.4.5 (affected); 6.4.6 (affected); 6.4.7 (affected); 6.4.8 (affected); 6.4.9 (affected). Source: CNA: VulDB
- Qihoo 360 / D606-6: 6.4.0 (affected); 6.4.1 (affected); 6.4.2 (affected); 6.4.3 (affected); 6.4.4 (affected); 6.4.5 (affected); 6.4.6 (affected); 6.4.7 (affected); 6.4.8 (affected); 6.4.9 (affected). Source: CNA: VulDB
- Qihoo 360 / D706: 6.4.0 (affected); 6.4.1 (affected); 6.4.2 (affected); 6.4.3 (affected); 6.4.4 (affected); 6.4.5 (affected); 6.4.6 (affected); 6.4.7 (affected); 6.4.8 (affected); 6.4.9 (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-78, CWE-77

## Exploit evidence

- exploit: https://gist.github.com/gajgdm6-cpu/e8ef7f512bebb987b0119562873afd5a (CNA: VulDB)

## References

- https://vuldb.com/vuln/430444 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/430444/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-121607 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1023262 (CNA: VulDB; third-party-advisory)

- https://gist.github.com/gajgdm6-cpu/e8ef7f512bebb987b0119562873afd5a (CNA: VulDB; exploit)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-121607; retrieved 2026-11-04; source updated 2026-11-04

Revision: cc5bb05ba9adb6ec3da642f48974b6cc13bd165ee50ec81301b85dcbeb51e1da

Canonical: https://y2.dev/cve/CVE-2026-121607

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