{
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        "names": [
          "\u003ca href=\"https://x.com/fluddsec\"\u003eFluddSec\u003c/a\u003e with \u003ca href=\"https://runiclabs.io/\"\u003eRunicLabs\u003c/a\u003e"
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    "aggregate_severity": {
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      "text": "Critical"
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    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
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    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
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      {
        "category": "self",
        "summary": "CVE-2026-45460 Microsoft Office Information Disclosure Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45460"
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        "category": "self",
        "summary": "CVE-2026-45460 Microsoft Office Information Disclosure Vulnerability - CSAF",
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        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
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      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
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    ],
    "title": "Microsoft Office Information Disclosure Vulnerability",
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        "date": "2026-06-19T20:27:34.995Z",
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          "date": "2026-06-09T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
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        {
          "date": "2026-06-19T07:00:00.000Z",
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          "number": "2",
          "summary": "Microsoft is announcing the availability of the security updates for Microsoft Office for Mac. Customers running affected Mac software should install the update for their product to be protected from this vulnerability. Customers running other Microsoft Office software do not need to take any action. See the [Release Notes](https://go.microsoft.com/fwlink/p/?linkid=831049) for more information and download links."
        },
        {
          "date": "2026-06-19T07:00:00.000Z",
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        "name": "Buffer Over-read"
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        {
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          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.",
          "title": "What type of information could be disclosed by this vulnerability?"
        },
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          "category": "faq",
          "text": "An attacker must send a user a malicious Office file and convince them to open it.",
          "title": "According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?"
        },
        {
          "category": "faq",
          "text": "Yes, the Preview Pane is an attack vector.",
          "title": "Is the Preview Pane an attack vector for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "Yes. As of June 16, 2025, the security update for Microsoft Office LTSC for Mac 2021, 2024 and Microsoft Office 365 for Mac are available. Customers running Microsoft Office LTSC for Mac 2021, 2024 and Microsoft Office 365 for Mac should ensure the update is installed to be protected from this vulnerability.",
          "title": "Are the updates for Microsoft Office LTSC for Mac 2021 and 2024 currently available?"
        },
        {
          "category": "faq",
          "text": "Yes. As of June 15, 2026, the security update for Microsoft Office for Android are available. Customers running Microsoft Office for Android should ensure the update is installed to be protected from this vulnerability.",
          "title": "Are the updates for Microsoft Office for Android currently available?"
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          "3",
          "4",
          "5",
          "6",
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          "8",
          "9",
          "10",
          "11",
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            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 4.1,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C",
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          "details": "Information Disclosure"
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      "title": "Microsoft Office Information Disclosure Vulnerability"
    }
  ]
}