[ CVE-2026-121606 · Published 4 Nov 2026 ]
Vulnerability in Qihoo 360 D621-2
CVSS 10.0
EPSS <1%No fix listed yet
[ Why it matters ]Priority signals
- Critical severity: CVSS 10.0
[ Description ]Official 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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.