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ETK-2026-3178Zero's internal tracking ID, independent of the CVE number.

ETK-2026-3178Zero's internal tracking ID, independent of the CVE number.

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

GHSA-vp77-hhrc-m2c3 ↗

no check availablenot proven exploitable
awaiting cvepublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).−7h37mkevAttacks confirmed in the real world.
other:OpenEXR 3.4.12-3.4.16; 3.5.0-3.5.2
fixed in 3.4.17, 3.5.3
CWE-787 Out-of-bounds Write
ETK-2026-3178Zero's internal tracking ID, independent of the CVE number., no cve assigned
cvss7.0ethiack provisional
7h 39msince last run
18mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org, not yet published
waiting for further signals−7h39mtrigger signal −7h37mpublic poc−7h37m
−6h
−4h
−2h
0

description

OpenEXR is affected when processing specially formed EXR files with y-subsampled channels and B44/B44A or DWAA/DWAB compression. An attacker able to provide such a file may crash an application during DWAA/DWAB decoding or trigger an out-of-bounds write when an application rewrites B44/B44A content; processing untrusted EXR files is required.

mitigation

Upgrade OpenEXR to 3.4.17, 3.5.3 or later.

fixed in 3.4.17, 3.5.3

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.
–
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
18m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
not published yet
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
−7h37m
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. 2026-10-31 14:36Z
  2. 2026-10-31 14:36Z

this entry in the feed

GET /api/v1/feed/ETK-2026-3178

{
  "etk_id": "ETK-2026-3178",
  "cve_id": null,
  "display_id": "ETK-2026-3178",
  "ghsa_id": "GHSA-vp77-hhrc-m2c3",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Incorrect sampled-height calculation in OpenEXR",
  "summary": "OpenEXR is affected when processing specially formed EXR files with y-subsampled channels and B44/B44A or DWAA/DWAB compression. An attacker able to provide such a file may crash an application during DWAA/DWAB decoding or trigger an out-of-bounds write when an application rewrites B44/B44A content; processing untrusted EXR files is required.",
  "mitigation": "Upgrade OpenEXR to 3.4.17, 3.5.3 or later.",
  "vendor": "other",
  "product": "other:OpenEXR",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "3.4.12-3.4.16",
        "3.5.0-3.5.2"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "3.4.17",
        "3.5.3"
      ],
      "package_name": "OpenEXR",
      "purl": null
    }
  ],
  "cwes": [
    787
  ],
  "cvss_score": 7,
  "cvss_src": "ethiack_provisional",
  "cvss_vector": null,
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 17.72586413333333,
  "t0_at": null,
  "signals": {
    "public_poc": {
      "at": "2026-10-31T14:36:54+00:00",
      "days": -0.31727342943287035,
      "is_lower_bound": true,
      "measured_at": "2026-10-31T22:13:46.456613+00:00",
      "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-vp77-hhrc-m2c3"
    },
    "trigger_signal": {
      "at": "2026-10-31T14:36:54+00:00",
      "days": -0.31727342943287035,
      "is_lower_bound": true,
      "measured_at": "2026-10-31T22:13:46.456613+00:00",
      "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-vp77-hhrc-m2c3"
    }
  }
}

published 2026-10-31 15:04Z
last change 2026-10-31 21:57Z

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