A vulnerability has been found in Qihoo 360 D621-2, D603-2, D600-2, D619, D606-6 and D706 up to 6.4.9. Affected by this issue is the function verify_sign of the file fs2/bin/iscm of the component Firmware Signature Verification. Such manipulation of the argument sign leads to improper verification of cryptographic signature. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Qihoo 360 D621-2 affected
Version Status Constraints
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 —
Qihoo 360 D603-2 affected
Version Status Constraints
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 —
Qihoo 360 D600-2 affected
Version Status Constraints
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 —
Qihoo 360 D619 affected
Version Status Constraints
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 —
Qihoo 360 D606-6 affected
Version Status Constraints
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 —
Qihoo 360 D706 affected
Version Status Constraints
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 —

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Qihoo 360 Subscribe
D600-2 Subscribe
D603-2 Subscribe
D606-6 Subscribe
D619 Subscribe
D621-2 Subscribe
D706 Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gist.github.com/gajgdm6-cpu/cf98af20ddb77f27a7c112214a6280f7 cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-121606 cve-icon cve-icon
https://vuldb.com/submit/1023261 cve-icon cve-icon
https://vuldb.com/vuln/430443 cve-icon cve-icon
https://vuldb.com/vuln/430443/cti cve-icon cve-icon
History

Wed, 04 Nov 2026 01:15:00 +0000

Type Values Removed Values Added
Description A vulnerability has been found in Qihoo 360 D621-2, D603-2, D600-2, D619, D606-6 and D706 up to 6.4.9. Affected by this issue is the function verify_sign of the file fs2/bin/iscm of the component Firmware Signature Verification. Such manipulation of the argument sign leads to improper verification of cryptographic signature. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Title Qihoo 360 D621-2/D603-2/D600-2/D619/D606-6/D706 Firmware Signature Verification iscm verify_sign signature verification
First Time appeared Qihoo 360
Qihoo 360 d600-2
Qihoo 360 d603-2
Qihoo 360 d606-6
Qihoo 360 d619
Qihoo 360 d621-2
Qihoo 360 d706
Weaknesses CWE-345
CWE-347
CPEs cpe:2.3:a:qihoo_360:d600-2:*:*:*:*:*:*:*:*
cpe:2.3:a:qihoo_360:d603-2:*:*:*:*:*:*:*:*
cpe:2.3:a:qihoo_360:d606-6:*:*:*:*:*:*:*:*
cpe:2.3:a:qihoo_360:d619:*:*:*:*:*:*:*:*
cpe:2.3:a:qihoo_360:d621-2:*:*:*:*:*:*:*:*
cpe:2.3:a:qihoo_360:d706:*:*:*:*:*:*:*:*
Vendors & Products Qihoo 360
Qihoo 360 d600-2
Qihoo 360 d603-2
Qihoo 360 d606-6
Qihoo 360 d619
Qihoo 360 d621-2
Qihoo 360 d706
References
Metrics cvssV2_0

{'score': 10, 'vector': 'AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:C'}

cvssV3_0

{'score': 10, 'vector': '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'}

cvssV3_1

{'score': 10, 'vector': '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'}

cvssV4_0

{'score': 10, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-11-04T01:00:26.282Z

Reserved: 2026-11-03T16:23:40.412Z

Link: CVE-2026-121606

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-04T01:17:23.880

Modified: 2026-11-04T01:17:24.050

Link: CVE-2026-121606

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses