NVD security advisoryCritical
Critical advisory for A vulnerability
CVE-2026-121606 · Reported 4 Nov 2026
Full advisory details, affected packages, severity context, and original source.
Affected technology
A vulnerabilityAffected product
Advisory overview
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.