CVE Watchtower

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CVE-2026-121606NVD

Vulnerability Summary

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.
Severity Level
CRITICAL(10.0)
Published Date
Nov 4, 2026
Last Modified
Nov 4, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
Data Pending
Root Weakness (CWE)
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v4.0 Base Metrics — Score 10.0 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)High
Integrity (Subsequent System)High
Availability (Subsequent System)High
CVSS v3.1 Base Metrics — Score 10.0 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Qihoo 360 D621-2 >= 6.4.0
  • Qihoo 360 D621-2 >= 6.4.1
  • Qihoo 360 D621-2 >= 6.4.2
  • Qihoo 360 D621-2 >= 6.4.3
  • Qihoo 360 D621-2 >= 6.4.4
  • Qihoo 360 D621-2 >= 6.4.5
  • Qihoo 360 D621-2 >= 6.4.6
  • Qihoo 360 D621-2 >= 6.4.7
  • Qihoo 360 D621-2 >= 6.4.8
  • Qihoo 360 D621-2 >= 6.4.9
  • Qihoo 360 D603-2 >= 6.4.0
  • Qihoo 360 D603-2 >= 6.4.1
  • Qihoo 360 D603-2 >= 6.4.2
  • Qihoo 360 D603-2 >= 6.4.3
  • Qihoo 360 D603-2 >= 6.4.4
  • Qihoo 360 D603-2 >= 6.4.5
  • Qihoo 360 D603-2 >= 6.4.6
  • Qihoo 360 D603-2 >= 6.4.7
  • Qihoo 360 D603-2 >= 6.4.8
  • Qihoo 360 D603-2 >= 6.4.9
  • Qihoo 360 D600-2 >= 6.4.0
  • Qihoo 360 D600-2 >= 6.4.1
  • Qihoo 360 D600-2 >= 6.4.2
  • Qihoo 360 D600-2 >= 6.4.3
  • Qihoo 360 D600-2 >= 6.4.4
  • Qihoo 360 D600-2 >= 6.4.5
  • Qihoo 360 D600-2 >= 6.4.6
  • Qihoo 360 D600-2 >= 6.4.7
  • Qihoo 360 D600-2 >= 6.4.8
  • Qihoo 360 D600-2 >= 6.4.9
  • Qihoo 360 D619 >= 6.4.0
  • Qihoo 360 D619 >= 6.4.1
  • Qihoo 360 D619 >= 6.4.2
  • Qihoo 360 D619 >= 6.4.3
  • Qihoo 360 D619 >= 6.4.4
  • Qihoo 360 D619 >= 6.4.5
  • Qihoo 360 D619 >= 6.4.6
  • Qihoo 360 D619 >= 6.4.7
  • Qihoo 360 D619 >= 6.4.8
  • Qihoo 360 D619 >= 6.4.9
  • Qihoo 360 D606-6 >= 6.4.0
  • Qihoo 360 D606-6 >= 6.4.1
  • Qihoo 360 D606-6 >= 6.4.2
  • Qihoo 360 D606-6 >= 6.4.3
  • Qihoo 360 D606-6 >= 6.4.4
  • Qihoo 360 D606-6 >= 6.4.5
  • Qihoo 360 D606-6 >= 6.4.6
  • Qihoo 360 D606-6 >= 6.4.7
  • Qihoo 360 D606-6 >= 6.4.8
  • Qihoo 360 D606-6 >= 6.4.9
  • Qihoo 360 D706 >= 6.4.0
  • Qihoo 360 D706 >= 6.4.1
  • Qihoo 360 D706 >= 6.4.2
  • Qihoo 360 D706 >= 6.4.3
  • Qihoo 360 D706 >= 6.4.4
  • Qihoo 360 D706 >= 6.4.5
  • Qihoo 360 D706 >= 6.4.6
  • Qihoo 360 D706 >= 6.4.7
  • Qihoo 360 D706 >= 6.4.8
  • Qihoo 360 D706 >= 6.4.9
Patched Versions
Not provided by cveorg for this CVE.
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.