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CVE-2026-118745

CVE-2026-118745

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

GHSA-cfv6-4v53-fff6 ↗EUVD-2026-122251 ↗

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.
nuget:Microsoft.NETCore.App.Runtime.win-x86 >= 8.0.0, < 8.0.34; >= 9.0.0, < 9.0.23; >= 10.0.0, < 10.0.15; >= 11.0.0-preview.1, < 11.0.0
fixed in 8.0.34, 9.0.23, 10.0.15, 11.0.0
ETK-2026-4128Zero's internal tracking ID, independent of the CVE number., permanent identifier
pkg:nuget/Microsoft.NETCore.App.Runtime.win-x86
pkg:nuget/Microsoft.NETCore.App.Runtime.win-x64
pkg:nuget/Microsoft.NETCore.App.Runtime.win-arm64
cvss7.7cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
6h 53msince last run
13mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org publication
trigger signal (cve.org) +0hwaiting for further signals+7h42m
0
+2h
+4h
+6h
+10h
+12h

description

Windows x86, x64, and Arm64 .NET runtime packs contain a heap buffer overflow in native PDB processing. An attacker may be able to execute code if an affected application is induced to read a malicious native PDB file.

mitigation

Upgrade Microsoft.NETCore.App.Runtime.win-x86, win-x64, or win-arm64 to 8.0.34, 9.0.23, 10.0.15, or 11.0.0 or later, as applicable. Rebuild and redeploy self-contained applications with the updated runtime, then restart affected processes.

fixed in 8.0.34, 9.0.23, 10.0.15, 11.0.0

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
13m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-10 18:21Z
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. 2026-11-10 18:21Z
    ghsa: trigger signal, started the run
    https://github.com/advisories/GHSA-x8x8-p968-x646
  2. 2026-11-10 18:21Z

this entry in the feed

GET /api/v1/feed/CVE-2026-118745

{
  "etk_id": "ETK-2026-4128",
  "cve_id": "CVE-2026-118745",
  "display_id": "CVE-2026-118745",
  "ghsa_id": "GHSA-cfv6-4v53-fff6",
  "euvd_id": "EUVD-2026-122251",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Heap buffer overflow in .NET Windows runtime packs",
  "summary": "Windows x86, x64, and Arm64 .NET runtime packs contain a heap buffer overflow in native PDB processing. An attacker may be able to execute code if an affected application is induced to read a malicious native PDB file.",
  "mitigation": "Upgrade Microsoft.NETCore.App.Runtime.win-x86, win-x64, or win-arm64 to 8.0.34, 9.0.23, 10.0.15, or 11.0.0 or later, as applicable. Rebuild and redeploy self-contained applications with the updated runtime, then restart affected processes.",
  "vendor": "nuget",
  "product": "nuget:Microsoft.NETCore.App.Runtime.win-x86",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 8.0.0, < 8.0.34"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "8.0.34"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-x86",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-x86"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 8.0.0, < 8.0.34"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "8.0.34"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-x64",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-x64"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 8.0.0, < 8.0.34"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "8.0.34"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-arm64",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-arm64"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 9.0.0, < 9.0.23"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "9.0.23"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-x86",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-x86"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 9.0.0, < 9.0.23"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "9.0.23"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-x64",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-x64"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 9.0.0, < 9.0.23"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "9.0.23"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-arm64",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-arm64"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 10.0.0, < 10.0.15"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "10.0.15"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-x86",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-x86"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 10.0.0, < 10.0.15"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "10.0.15"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-x64",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-x64"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 10.0.0, < 10.0.15"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "10.0.15"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-arm64",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-arm64"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11.0.0-preview.1, < 11.0.0"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "11.0.0"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-x86",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-x86"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11.0.0-preview.1, < 11.0.0"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "11.0.0"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-x64",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-x64"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11.0.0-preview.1, < 11.0.0"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "11.0.0"
      ],
      "package_name": "Microsoft.NETCore.App.Runtime.win-arm64",
      "purl": "pkg:nuget/Microsoft.NETCore.App.Runtime.win-arm64"
    }
  ],
  "cwes": null,
  "cvss_score": 7.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 13.0164355,
  "t0_at": "2026-11-10T18:21:51.212000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-10T18:21:51.212000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-10T18:21:51.212000+00:00",
      "url": "https://github.com/advisories/GHSA-x8x8-p968-x646"
    }
  }
}

published 2026-11-11 01:50Z
last change 2026-11-11 08:31Z

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