CVE-2026-121606
Qihoo 360 D621-2/D603-2/D600-2/D619/D606-6/D706 Firmware Signature Verification iscm verify_sign signature verification
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.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Qihoo 360 | D621-2 | 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 | 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 | D619 | 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 |
References
External links from the record. They lead to third-party sites.
- VDB-430443 | Qihoo 360 D621-2/D603-2/D600-2/D619/D606-6/D706 Firmware Signature Verification iscm verify_sign signature…
https://vuldb.com/vuln/430443 - VDB-430443 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/430443/cti - CVE-2026-121606 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-121606 - Submit #1023261 | 360 (Qihoo 360) 360 Smart Camera (IPC) 6.0.24 ~ 6.4.9 Improper Verification of Cryptographic Signature
https://vuldb.com/submit/1023261 - https://gist.github.com/gajgdm6-cpu/cf98af20ddb77f27a7c112214a6280f7