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Qihoo 360 D603-2/D600-2/D606-6/D706 iscm testspeed_command os command injection

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

10.0CriticalCNA
Exploited
No known exploitation
Fix
No fix listed
Who is exposed
Not reported

Do first: Workaround: No fix is confirmed in the facts, so no official patch is documented yet. Limit access to the device's management and push-message interfaces to trusted networks while waiting for a fix.

32Pcve.now Index 32 of 100 · methodology v3 · provisional
  • Exploitation?/40Exploitation: unknown (data gap). No CISA SSVC exploitation rating yet
  • Exposure17/25No login or user action needed, reachable over the network without a login · Data gap: Advisories don't say whether default setups are affected
  • Reach?/20Reach: unknown (data gap). No tracked technology or package matched
  • Severity10/10CVSS 10.0
  • No patch5/5No patch listed yet

What would change the score

  • Would score about 77 if added to CISA KEV
  • Would score about 72 if CISA's SSVC rates exploitation active
  • Would score about 37 if advisories confirm default setups are exposed

CVE-2026-121607 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 10.0 (critical) and affects D603-2, D600-2, D606-6 and 1 more; no fixed version is listed yet.

Published
Last modified
Published
Not listed in CISA KEV
1.99% · 80th percentile
32/100 · provisional
Unclear
None on Exploit-DB, Metasploit or GitHub
On X
View the cve.now post

Summary

The affected products are Qihoo 360 D603-2, D600-2, D606-6, and D706 devices, specifically the firmware's iscm component. An attacker who can reach the device over the network could inject operating system commands through the host parameter, potentially gaining control of the device.

Read the original description

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.

What to do

  • Workaround: No fix is confirmed in the facts, so no official patch is documented yet. Limit access to the device's management and push-message interfaces to trusted networks while waiting for a fix.

Timeline

  1. CVE published
  2. First seen by cve.now
  3. Posted on X by cve.now

Affected versions

  • Qihoo 360 D603-2

    6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4, 6.4.5, 6.4.6, 6.4.7, 6.4.8, 6.4.9

  • Qihoo 360 D600-2

    6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4, 6.4.5, 6.4.6, 6.4.7, 6.4.8, 6.4.9

  • Qihoo 360 D606-6

    6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4, 6.4.5, 6.4.6, 6.4.7, 6.4.8, 6.4.9

  • Qihoo 360 D706

    6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4, 6.4.5, 6.4.6, 6.4.7, 6.4.8, 6.4.9

Evidence 5

  1. Advisory
  2. Advisory
  3. Advisory
  4. Advisory
  5. Exploit

Corrections

None so far.

Something wrong on this page? Report an error. Every fix is listed here.

FAQ

Questions about CVE-2026-121607

Is CVE-2026-121607 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

What does this mean?

The router's iscm testspeed_command function takes the host value from a push JSON message and passes it to the operating system without proper checks. A crafted host value can make the device run arbitrary OS commands as root.Source: gist.github.com

Which versions are affected by CVE-2026-121607?

D603-2: versions 6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4 and 5 more. D600-2: versions 6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4 and 5 more. D606-6: versions 6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4 and 5 more. D706: versions 6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4 and 5 more.Source: cve.now feed data

Am I affected, and how do I check?

The advisory lists firmware versions 6.3.0 through 6.4.9 on the D603-2, D600-2, D606-6 and D706 (MIPS) models. To check a device, compare its firmware version against that range in the admin interface or system information page.Source: gist.github.com

How do I fix CVE-2026-121607?

No fixed version is named in the facts, so there is no confirmed upgrade target. Check the vendor's site for a firmware release newer than 6.4.9 and apply it when it is available.Source: gist.github.com

What if there's no patch?

No fix is confirmed in the facts, so no official patch is documented yet. Limit access to the device's management and push-message interfaces to trusted networks while waiting for a fix.Source: gist.github.com