CVE-2026-66563

waiting for further signalsZero needs more public information before it can validate it.

GHSA-vfx8-984f-hxhg ↗EUVD-2026-96517 ↗

no check availablenot proven exploitable
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
themerex Windsor >= n/a, <= 2.10
ETK-2026-1200Zero's internal tracking ID, independent of the CVE number., permanent identifier
10d 03h 23msince last run
37mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = trigger signal
trigger signal (cve.org) +0hwaiting for further signals+5h48m
0
+2h
+4h
+8h
+10h
+12h

description

Themerex Windsor versions 2.10 and earlier are affected by an unauthenticated PHP object injection issue. An unauthenticated remote attacker may be able to trigger PHP object injection; the evidence does not identify any further precondition or a specific affected interface.

mitigation

Update to a vendor-provided release documented as unaffected; the evidence does not establish a fixed version. Until then, reduce exposure by restricting unauthenticated public access to affected installations with authentication or network controls.

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.
–
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.
0.31%22nd percentile
agent run time
37m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-10 19:36Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

No artifact: an exploit or check was attempted but could not be produced at this moment.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-10-10 19:36Z
    ghsa: trigger signal, started the run
  2. 2026-10-10 19:36Z

this entry in the feed

GET /api/v1/feed/CVE-2026-66563

{
  "etk_id": "ETK-2026-1200",
  "cve_id": "CVE-2026-66563",
  "display_id": "CVE-2026-66563",
  "ghsa_id": "GHSA-vfx8-984f-hxhg",
  "euvd_id": "EUVD-2026-96517",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthenticated PHP object injection in Themerex Windsor",
  "summary": "Themerex Windsor versions 2.10 and earlier are affected by an unauthenticated PHP object injection issue. An unauthenticated remote attacker may be able to trigger PHP object injection; the evidence does not identify any further precondition or a specific affected interface.",
  "mitigation": "Update to a vendor-provided release documented as unaffected; the evidence does not establish a fixed version. Until then, reduce exposure by restricting unauthenticated public access to affected installations with authentication or network controls.",
  "vendor": "themerex",
  "product": "Windsor",
  "affected": [
    {
      "affected_notes": [
        ">= n/a, <= 2.10"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Windsor",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 9.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0031,
  "epss_percentile": 0.2283,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 37.05746056666667,
  "t0_at": "2026-10-10T19:36:09.853000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-10T19:36:09.853000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-10T19:36:09.853000+00:00",
      "url": "https://github.com/advisories/GHSA-vfx8-984f-hxhg"
    }
  }
}

published 2026-10-11 00:47Z
last change 2026-10-21 04:45Z

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