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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2026-54124

Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code locally.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-54124
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 09:28 UTC · Revision 1

Source evidence

CVE-2026-54124

core-osv · Original source

Published 14 Jul 2026, 18:18 UTC

Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code locally.

osv:CVE-2026-54124
Complete source record
{
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  "url": "https://osv.dev/vulnerability/CVE-2026-54124",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-54124",
    "summary": "Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code locally.",
    "evidence": "osv:CVE-2026-54124",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-54124",
      "aliases": [
        "CVE-2026-54124"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
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              "repo": "https://github.com/microsoft/terminal",
              "type": "GIT",
              "events": [
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                  "introduced": "0"
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                {
                  "fixed": "b4e69c68620a822407d45bfbba6ee10feebc70a3"
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              ],
              "database_specific": {
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                    "range": [
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                      {
                        "fixed": "1.24.11321.0"
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          "versions": [
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            "v1.24.10621.0",
            "v1.24.10212.0",
            "v1.24.3504.0",
            "v1.24.2812.0",
            "v1.24.2682.0",
            "v1.24.2372.0",
            "v1.20.10293.0",
            "v1.10.1933.0",
            "v1.9.1445.0",
            "v0.1.1361.0",
            "v0.1.1211.0",
            "v0.1.1204.0",
            "v0.1.1161.0",
            "v0.1.1093.0",
            "v0.1.1025.0",
            "v0.1.1002.0",
            "experiment-rel-windows-inbox",
            "experiment-master",
            "experiment-f-ServerApp",
            "experiment-OutsideBuild",
            "broken-tabstops",
            "RS2-final"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54124.json",
            "vanir_signatures": [
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                "source": "https://github.com/microsoft/terminal/commit/b4e69c68620a822407d45bfbba6ee10feebc70a3",
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              {
                "id": "CVE-2026-54124-466954f8",
                "digest": {
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                  "function_hash": "174617317527413751772409919194478734325"
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                "source": "https://github.com/microsoft/terminal/commit/b4e69c68620a822407d45bfbba6ee10feebc70a3",
                "target": {
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                "digest": {
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                "source": "https://github.com/microsoft/terminal/commit/b4e69c68620a822407d45bfbba6ee10feebc70a3",
                "target": {
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                  "function": "TerminalPage::_IsUriConsideredSomewhatSafe"
                },
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                "signature_type": "Function",
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              },
              {
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                "target": {
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                },
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              },
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                },
                "source": "https://github.com/microsoft/terminal/commit/b4e69c68620a822407d45bfbba6ee10feebc70a3",
                "target": {
                  "file": "src/cascadia/TerminalSettingsModel/GlobalAppSettings.cpp",
                  "function": "GlobalAppSettings::Copy"
                },
                "deprecated": false,
                "signature_type": "Function",
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              },
              {
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                "source": "https://github.com/microsoft/terminal/commit/b4e69c68620a822407d45bfbba6ee10feebc70a3",
                "target": {
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                "signature_type": "Line",
                "signature_version": "v1"
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              {
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                "digest": {
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                "source": "https://github.com/microsoft/terminal/commit/b4e69c68620a822407d45bfbba6ee10feebc70a3",
                "target": {
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                },
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                "signature_type": "Line",
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              {
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                "source": "https://github.com/microsoft/terminal/commit/b4e69c68620a822407d45bfbba6ee10feebc70a3",
                "target": {
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                "deprecated": false,
                "signature_type": "Line",
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            ],
            "vanir_signatures_modified": "2026-10-24T14:39:15Z"
          }
        }
      ],
      "modified": "2026-10-24T14:39:15.845184104Z",
      "provider": "osv",
      "references": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54124"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
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            "vendor_product": "microsoft:windows_10_21h2",
            "extracted_events": [
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          {
            "cpes": [
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              "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*"
            ],
            "vendor_product": "microsoft:windows_11_26h1",
            "extracted_events": [
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                "range": [
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                    "fixed": "10.0.28000.2269"
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                  {
                    "fixed": "10.0.28000.2525"
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          },
          {
            "cpes": [
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            "vendor_product": "microsoft:windows_server_2022",
            "extracted_events": [
              {
                "range": [
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                    "fixed": "10.0.20348.5386"
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                ],
                "source": "CPE_RANGE"
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            ]
          },
          {
            "cpes": [
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            "vendor_product": "microsoft:windows_server_2025",
            "extracted_events": [
              {
                "range": [
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                    "fixed": "10.0.26100.33158"
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                ],
                "source": "CPE_RANGE"
              }
            ]
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        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-54124",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 443811,
  "published_at": "2026-07-14T18:18:08.373+00:00"
}