CVE-2026-110059

High (8.8)—

Schedule the patchSeverity High 8.8. No public exploit or active exploitation known.

Vendor advisory· Microsoft MSRC

Severity8.8High · CVSS 3.1

Exploitation probability0.95 %higher than 62% of CVEs · score from Nov 11, 2026

Active exploitationNonot in the CISA catalog · checked Nov 12, 03:00 AM

Public exploitNot knownno public code found

News and reports on Orbitaley

Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.

Timeline

Built from our own data: NVD, CISA KEV and other exploitation catalogues, FIRST EPSS, public exploits, specialised media and Orbitaley coverage.

Nov 10, 2026CVE record published in NVD
Nov 10, 2026Alert: Microsoft fixes 200 vulnerabilities, including an Outlook flaw CISA confirms is being exploited

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1203 Exploitation for Client Executionexecution90 %
Primary impactT1059 Command and Scripting Interpreterexecution75 %

La descripción indica ejecución de código por red sin privilegios; el vector CVSS tiene UI:R, lo que sitúa la explotación en ejecución en el cliente (T1203). No se nombra un intérprete concreto.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Restrict Web-Based Content Privileged Account Management Limit Software Installation Execution Prevention Behavior Prevention on Endpoint Disable or Remove Feature or Program

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Microsoft — Office Access^AI

NVD record

NVD status: Awaiting Analysis
Published: Nov 10, 2026
Last modified: Nov 10, 2026
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-122

References

Referencemsrc.microsoft.com/update-guide/vulnerability/CVE-2026-110059

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-110059",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-110059",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-11-10T20:41:33.106883Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
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        "cvssData": {
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Microsoft 365 Apps for Enterprise",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.1",
              "lessThan": "https://aka.ms/OfficeSecurityReleases",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "32-bit Systems",
            "x64-based Systems"
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Office LTSC 2021",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.1",
              "lessThan": "16.0.14334.21048",
              "versionType": "custom"
            }
          ],
          "platforms": [
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          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Office LTSC 2024",
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  "published": "2026-11-10T19:18:23.610",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-110059",
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network."
    }
  ],
  "lastModified": "2026-11-10T21:18:18.283",
  "sourceIdentifier": "secure@microsoft.com"
}