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Null pointer dereference vulnerability in QNetworkAccessManager impacts Qt

Type: advisorySources: Official CVE List

A malicious or compromised HTTP/2 server withholding SETTINGS ACK can send RST_STREAM on a completed stream, planting a null pointer, and then send a PUSH_PROMISE for that stream, causing a null pointer dereference in the QNetworkAccessManager class of the Qt Network module that crashes the application.

Products
qt
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-96432
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 10:25 UTC · Revision 1

Source evidence

Null pointer dereference vulnerability in QNetworkAccessManager impacts Qt

core-cve · Original source

Published 26 Oct 2026, 11:31 UTC

A malicious or compromised HTTP/2 server withholding SETTINGS ACK can send RST_STREAM on a completed stream, planting a null pointer, and then send a PUSH_PROMISE for that stream, causing a null pointer dereference in the QNetworkAccessManager class of the Qt Network module that crashes the application.

cve:CVE-2026-96432

qt

Fixed versions: Not specified

Complete source record
{
  "id": "de877c2a25c5ac4f0c47c72a5f0c64ec81b5f31aceb69fea06c7d459f1e24376",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-96432",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Null pointer dereference vulnerability in QNetworkAccessManager impacts Qt",
    "summary": "A malicious or compromised HTTP/2 server withholding SETTINGS ACK can send RST_STREAM on a completed stream, planting a null pointer, and then send a PUSH_PROMISE for that stream, causing a null pointer dereference in the QNetworkAccessManager class of the Qt Network module that crashes the application.",
    "evidence": "cve:CVE-2026-96432",
    "products": [
      {
        "name": {
          "value": "qt",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-96432",
      "aliases": [
        "CVE-2026-96432"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "Safety": "NOT_DEFINED",
            "version": "4.0",
            "Recovery": "USER",
            "baseScore": 2.1,
            "Automatable": "NO",
            "attackVector": "NETWORK",
            "baseSeverity": "LOW",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green",
            "exploitMaturity": "UNREPORTED",
            "providerUrgency": "GREEN",
            "userInteraction": "ACTIVE",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnerabilityResponseEffort": "LOW"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*",
            "cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:*"
          ],
          "vendor": "qt",
          "modules": [
            "qtbase"
          ],
          "product": "qt",
          "versions": [
            {
              "status": "affected",
              "version": "6.8.0",
              "versionType": "python",
              "lessThanOrEqual": "6.8.9"
            },
            {
              "status": "affected",
              "version": "6.9.0",
              "versionType": "python",
              "lessThanOrEqual": "6.11.2"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T14:35:18.098Z",
      "provider": "cve",
      "references": [
        "https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-96432:",
        "https://codereview.qt-project.org/c/qt/qtbase/+/759718"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-96432",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T13:20:18.870440Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-26T14:35:18.098Z"
            }
          }
        ],
        "cna": {
          "orgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
          "shortName": "Qt",
          "dateUpdated": "2026-10-26T11:31:20.304Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-96432",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 311589,
  "published_at": "2026-10-26T11:31:20.304+00:00"
}