CVE-2026-86574

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

GHSA-g8rj-6x73-6prx ↗EUVD-2026-110650 ↗

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.
Hitachi JP1/Base >= 11-00, < 12-50-54
fixed in 12-50-54
CWE-122 Heap-based Buffer Overflow
ETK-2026-2748Zero's internal tracking ID, independent of the CVE number., permanent identifier
1h 45msince last run
15mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org publication
trigger signal (cve.org) +0hwaiting for further signals+3h35m
0
+2h
+6h
+8h
+10h
+12h

description

JP1/Base versions from 11-00 through versions before 12-50-54 are affected by a heap-based buffer overflow. A network-reachable attacker does not require authentication or user interaction; successful exploitation may compromise confidentiality, integrity, or availability.

mitigation

Upgrade JP1/Base to version 12-50-54 or later.

fixed in 12-50-54

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
15m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-27 09:37Z
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, 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.

  1. 2026-10-27 09:37Z
    cve_org: trigger signal, started the run

this entry in the feed

GET /api/v1/feed/CVE-2026-86574

{
  "etk_id": "ETK-2026-2748",
  "cve_id": "CVE-2026-86574",
  "display_id": "CVE-2026-86574",
  "ghsa_id": "GHSA-g8rj-6x73-6prx",
  "euvd_id": "EUVD-2026-110650",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Heap-based buffer overflow in JP1/Base",
  "summary": "JP1/Base versions from 11-00 through versions before 12-50-54 are affected by a heap-based buffer overflow. A network-reachable attacker does not require authentication or user interaction; successful exploitation may compromise confidentiality, integrity, or availability.",
  "mitigation": "Upgrade JP1/Base to version 12-50-54 or later.",
  "vendor": "Hitachi",
  "product": "JP1/Base",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11-00, < 12-50-54"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "12-50-54"
      ],
      "package_name": "JP1/Base",
      "purl": null
    }
  ],
  "cwes": [
    122
  ],
  "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": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 15.370099566666667,
  "t0_at": "2026-10-27T09:37:09.275000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-27T09:37:09.275000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T09:37:09.275000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-86574"
    }
  }
}

published 2026-10-27 10:39Z
last change 2026-10-27 14:18Z

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