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CVE-2026-83399

CVE-2026-83399

validatedZero produced an exploit or a check.

GHSA-xphr-m446-69p7 ↗EUVD-2026-106317 ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
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.
Oracle Corporation Oracle WebLogic Server 12.2.1.4.0; 14.1.1.0.0; 14.1.2.0.0; 15.1.1.0.0
ETK-2026-2257Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss9.8cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
+3h54mTTV
8mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0hcheck available+3h54magent stopped
0
+1h
+2h
+3h

description

Oracle WebLogic Server Core releases 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0 are affected. An unauthenticated attacker able to connect to T3 or IIOP may take control of the WebLogic Server instance.

mitigation

Apply the Oracle October 2026 Critical Patch Update following Oracle's instructions. Restrict T3 and IIOP exposure to trusted hosts and networks until updates are deployed.

check
available
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
8m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-20 21:23Z
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

Contextual check: a technique exists and was validated, but no deterministic check could cover this one.

source signals

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

  1. 2026-10-20 21:23Z
    ghsa: trigger signal, started the run
    https://github.com/advisories/GHSA-xphr-m446-69p7
  2. 2026-10-20 21:23Z

this entry in the feed

GET /api/v1/feed/CVE-2026-83399

{
  "etk_id": "ETK-2026-2257",
  "cve_id": "CVE-2026-83399",
  "display_id": "CVE-2026-83399",
  "ghsa_id": "GHSA-xphr-m446-69p7",
  "euvd_id": "EUVD-2026-106317",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthenticated T3/IIOP server takeover in Oracle WebLogic Server",
  "summary": "Oracle WebLogic Server Core releases 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0 are affected. An unauthenticated attacker able to connect to T3 or IIOP may take control of the WebLogic Server instance.",
  "mitigation": "Apply the Oracle October 2026 Critical Patch Update following Oracle's instructions. Restrict T3 and IIOP exposure to trusted hosts and networks until updates are deployed.",
  "vendor": "Oracle Corporation",
  "product": "Oracle WebLogic Server",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "12.2.1.4.0",
        "14.1.1.0.0",
        "14.1.2.0.0",
        "15.1.1.0.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Oracle WebLogic Server",
      "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 7.86662055,
  "t0_at": "2026-10-20T21:23:46.187000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-21T01:17:26.304329+00:00",
      "days": 0.16226987649305555,
      "is_lower_bound": false,
      "measured_at": "2026-10-20T21:23:46.187000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-20T21:23:46.187000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-20T21:23:46.187000+00:00",
      "url": "https://github.com/advisories/GHSA-xphr-m446-69p7"
    }
  }
}

published 2026-10-21 01:09Z
last change 2026-10-21 06:02Z

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