CVE-2026-121606 Qihoo 360 D621-2/D603-2/D600-2/D619/D606-6/D706 Firmware Signature Verification iscm verify_sign signature verification
CriticalCVSS 10.0
- Published
- Updated
- Exploit status
- No public exploit known
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
| Product | Affected versions | Fixed in |
|---|---|---|
| qihoo 360 d621-2 | = 6.4.0 | No fix listed |
| qihoo 360 d621-2 | = 6.4.1 | No fix listed |
| qihoo 360 d621-2 | = 6.4.2 | No fix listed |
| qihoo 360 d621-2 | = 6.4.3 | No fix listed |
| qihoo 360 d621-2 | = 6.4.4 | No fix listed |
| qihoo 360 d621-2 | = 6.4.5 | No fix listed |
| qihoo 360 d621-2 | = 6.4.6 | No fix listed |
| qihoo 360 d621-2 | = 6.4.7 | No fix listed |
| qihoo 360 d621-2 | = 6.4.8 | No fix listed |
| qihoo 360 d621-2 | = 6.4.9 | No fix listed |
| qihoo 360 d603-2 | = 6.4.0 | No fix listed |
| qihoo 360 d603-2 | = 6.4.1 | No fix listed |
| qihoo 360 d603-2 | = 6.4.2 | No fix listed |
| qihoo 360 d603-2 | = 6.4.3 | No fix listed |
| qihoo 360 d603-2 | = 6.4.4 | No fix listed |
| qihoo 360 d603-2 | = 6.4.5 | No fix listed |
| qihoo 360 d603-2 | = 6.4.6 | No fix listed |
| qihoo 360 d603-2 | = 6.4.7 | No fix listed |
| qihoo 360 d603-2 | = 6.4.8 | No fix listed |
| qihoo 360 d603-2 | = 6.4.9 | No fix listed |
| qihoo 360 d600-2 | = 6.4.0 | No fix listed |
| qihoo 360 d600-2 | = 6.4.1 | No fix listed |
| qihoo 360 d600-2 | = 6.4.2 | No fix listed |
| qihoo 360 d600-2 | = 6.4.3 | No fix listed |
| qihoo 360 d600-2 | = 6.4.4 | No fix listed |
Show 35 more
| qihoo 360 d600-2 | = 6.4.5 | No fix listed |
| qihoo 360 d600-2 | = 6.4.6 | No fix listed |
| qihoo 360 d600-2 | = 6.4.7 | No fix listed |
| qihoo 360 d600-2 | = 6.4.8 | No fix listed |
| qihoo 360 d600-2 | = 6.4.9 | No fix listed |
| qihoo 360 d619 | = 6.4.0 | No fix listed |
| qihoo 360 d619 | = 6.4.1 | No fix listed |
| qihoo 360 d619 | = 6.4.2 | No fix listed |
| qihoo 360 d619 | = 6.4.3 | No fix listed |
| qihoo 360 d619 | = 6.4.4 | No fix listed |
| qihoo 360 d619 | = 6.4.5 | No fix listed |
| qihoo 360 d619 | = 6.4.6 | No fix listed |
| qihoo 360 d619 | = 6.4.7 | No fix listed |
| qihoo 360 d619 | = 6.4.8 | No fix listed |
| qihoo 360 d619 | = 6.4.9 | No fix listed |
| qihoo 360 d606-6 | = 6.4.0 | No fix listed |
| qihoo 360 d606-6 | = 6.4.1 | No fix listed |
| qihoo 360 d606-6 | = 6.4.2 | No fix listed |
| qihoo 360 d606-6 | = 6.4.3 | No fix listed |
| qihoo 360 d606-6 | = 6.4.4 | No fix listed |
| qihoo 360 d606-6 | = 6.4.5 | No fix listed |
| qihoo 360 d606-6 | = 6.4.6 | No fix listed |
| qihoo 360 d606-6 | = 6.4.7 | No fix listed |
| qihoo 360 d606-6 | = 6.4.8 | No fix listed |
| qihoo 360 d606-6 | = 6.4.9 | No fix listed |
| qihoo 360 d706 | = 6.4.0 | No fix listed |
| qihoo 360 d706 | = 6.4.1 | No fix listed |
| qihoo 360 d706 | = 6.4.2 | No fix listed |
| qihoo 360 d706 | = 6.4.3 | No fix listed |
| qihoo 360 d706 | = 6.4.4 | No fix listed |
| qihoo 360 d706 | = 6.4.5 | No fix listed |
| qihoo 360 d706 | = 6.4.6 | No fix listed |
| qihoo 360 d706 | = 6.4.7 | No fix listed |
| qihoo 360 d706 | = 6.4.8 | No fix listed |
| qihoo 360 d706 | = 6.4.9 | No fix listed |
References
- VDB-430443 | Qihoo 360 D621-2/D603-2/D600-2/D619/D606-6/D706 Firmware Signature Verification iscm verify_sign signature verification technical-description vdb-entry
- VDB-430443 | CTI Indicators (IOB, IOC, IOA) permissions-required signature
- CVE-2026-121606 | CVE Analysis and Report third-party-advisory
- Submit #1023261 | 360 (Qihoo 360) 360 Smart Camera (IPC) 6.0.24 ~ 6.4.9 Improper Verification of Cryptographic Signature exploit third-party-advisory
- gist.github.com exploit