CVE-2026-121606
waiting for further signalsZero needs more public information before it can validate it.GHSA-4g7h-mgvw-cqjw ↗EUVD-2026-116670 ↗
no check availablenot proven exploitable
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).+0mkevAttacks confirmed in the real world.
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
CWE-347 Improper Verification of Cryptographic Signature
ETK-2026-3426Zero's internal tracking ID, independent of the CVE number., permanent identifier
1h 17msince last run
11mAI analysisAnalysis: how long the AI spent reversing this signal.
description
Qihoo 360 D621-2, D603-2, D600-2, D619, D606-6, and D706 devices through 6.4.9 are affected by a firmware signature validation flaw. A remote attacker may be able to cause invalid or unauthorized firmware signatures to be accepted when the affected verification functionality is reachable.
mitigation
Limit remote access to affected devices and isolate their administration and firmware-update functions to trusted networks. Obtain and apply a vendor-provided corrected firmware release when one becomes available; no fixed version is recorded.
check
no
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
no
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
11m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-04 01:00Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
+0m
Δ to kevAttacks confirmed in the real world.
–
outcome
Contextual, not validated: no deterministic check could cover this one, and no technique passed our review.
source signals
Public signals that triggered or updated the pipeline. These are inputs for the deltas above.
- 2026-11-04 01:00Zcve_org: trigger signal, started the run
- 2026-11-04 01:24Zexploit reference (gist.github.com)
this entry in the feed
GET /api/v1/feed/CVE-2026-121606
{ "etk_id": "ETK-2026-3426", "cve_id": "CVE-2026-121606", "display_id": "CVE-2026-121606", "ghsa_id": "GHSA-4g7h-mgvw-cqjw", "euvd_id": "EUVD-2026-116670", "status": "published", "anchor_state": "anchored", "title": "Improper firmware signature verification in Qihoo 360 routers", "summary": "Qihoo 360 D621-2, D603-2, D600-2, D619, D606-6, and D706 devices through 6.4.9 are affected by a firmware signature validation flaw. A remote attacker may be able to cause invalid or unauthorized firmware signatures to be accepted when the affected verification functionality is reachable.", "mitigation": "Limit remote access to affected devices and isolate their administration and firmware-update functions to trusted networks. Obtain and apply a vendor-provided corrected firmware release when one becomes available; no fixed version is recorded.", "vendor": "Qihoo 360", "product": "D621-2", "affected": [ { "affected_notes": [], "affected_ranges": [ "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" ], "ecosystem": null, "fixed_versions": [], "package_name": "D621-2", "purl": null }, { "affected_notes": [], "affected_ranges": [ "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" ], "ecosystem": null, "fixed_versions": [], "package_name": "D603-2", "purl": null }, { "affected_notes": [], "affected_ranges": [ "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" ], "ecosystem": null, "fixed_versions": [], "package_name": "D600-2", "purl": null }, { "affected_notes": [], "affected_ranges": [ "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" ], "ecosystem": null, "fixed_versions": [], "package_name": "D619", "purl": null }, { "affected_notes": [], "affected_ranges": [ "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" ], "ecosystem": null, "fixed_versions": [], "package_name": "D606-6", "purl": null }, { "affected_notes": [], "affected_ranges": [ "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" ], "ecosystem": null, "fixed_versions": [], "package_name": "D706", "purl": null } ], "cwes": [ 347 ], "cvss_score": 10, "cvss_src": "cna_vendor", "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P", "epss_score": null, "epss_percentile": null, "epss_asof": null, "automation": "contextual", "check": false, "check_confidence_basis": null, "exploit": false, "pipeline_minutes": 10.902281133333334, "t0_at": "2026-11-04T01:00:26.282000+00:00", "signals": { "public_poc": { "at": "2026-11-04T01:00:26.282000+00:00", "days": 0, "is_lower_bound": false, "measured_at": "2026-11-04T01:00:26.282000+00:00", "url": "https://gist.github.com/gajgdm6-cpu/cf98af20ddb77f27a7c112214a6280f7" }, "trigger_signal": { "at": "2026-11-04T01:00:26.282000+00:00", "days": 0, "is_lower_bound": false, "measured_at": "2026-11-04T01:00:26.282000+00:00", "url": "https://www.cve.org/CVERecord?id=CVE-2026-121606" } } }
published 2026-11-04 01:14Z
last change 2026-11-04 04:08Z
Need the technical details behind an entry?
Every entry here shows what we attempted and when. The technical details, the generated exploit that fired it and the evidence behind the verdict are not public. Tell us about your use case and we’ll get back to you about extended API access.