CVE-2026-88189
Status: AnalyzedHigh (7.8)—
Severity7.8High · CVSS 3.1
Exploitation probability0.24 %higher than 14% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVSS
- Base score
- 7.8
- Version
- 3.1
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days
- 0.24 %
- Percentile among all scored CVEs
- 14
- Score date
- 10/20/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1068Exploitation for Privilege Escalationprivilege escalation90 %
El vector AV:L con UI:N y la descripción 'elevate privileges locally' indican escalada local sin interacción. El texto no cita ejecución de comandos, así que no se asigna T1059 como impacto.
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
Affected technologies (10)
CWEs
- CWE-125
References
Show 1 references
Raw JSON (NVD)
Show
{
"id": "CVE-2026-88189",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-88189",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-10-13T19:51:12.310986Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secure@microsoft.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "secure@microsoft.com",
"affectedData": [
{
"vendor": "Microsoft",
"product": "Windows 10 Version 1809",
"versions": [
{
"status": "affected",
"version": "10.0.17763.0",
"lessThan": "10.0.17763.9376",
"versionType": "custom"
}
],
"platforms": [
"32-bit Systems",
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows 10 Version 21H2",
"versions": [
{
"status": "affected",
"version": "10.0.19044.0",
"lessThan": "10.0.19044.7807",
"versionType": "custom"
}
],
"platforms": [
"32-bit Systems",
"ARM64-based Systems",
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows 10 Version 22H2",
"versions": [
{
"status": "affected",
"version": "10.0.19045.0",
"lessThan": "10.0.19045.7807",
"versionType": "custom"
}
],
"platforms": [
"32-bit Systems",
"ARM64-based Systems",
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows 11 version 23H2",
"versions": [
{
"status": "affected",
"version": "10.0.22631.0",
"lessThan": "10.0.22631.7652",
"versionType": "custom"
}
],
"platforms": [
"ARM64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows 11 Version 23H2",
"versions": [
{
"status": "affected",
"version": "10.0.22631.0",
"lessThan": "10.0.22631.7652",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows 11 Version 24H2",
"versions": [
{
"status": "affected",
"version": "10.0.26100.0",
"lessThan": "10.0.26100.9711",
"versionType": "custom"
}
],
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows 11 Version 25H2",
"versions": [
{
"status": "affected",
"version": "10.0.26200.0",
"lessThan": "10.0.26200.9711",
"versionType": "custom"
}
],
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows 11 Version 26H2",
"versions": [
{
"status": "affected",
"version": "10.0.26300.0",
"lessThan": "10.0.26300.9711",
"versionType": "custom"
}
],
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows Server 2019",
"versions": [
{
"status": "affected",
"version": "10.0.17763.0",
"lessThan": "10.0.17763.9376",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows Server 2019 (Server Core installation)",
"versions": [
{
"status": "affected",
"version": "10.0.17763.0",
"lessThan": "10.0.17763.9376",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows Server 2022",
"versions": [
{
"status": "affected",
"version": "10.0.20348.0",
"lessThan": "10.0.20348.5761",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows Server 2025",
"versions": [
{
"status": "affected",
"version": "10.0.26100.0",
"lessThan": "10.0.26100.33650",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Windows Server 2025 (Server Core installation)",
"versions": [
{
"status": "affected",
"version": "10.0.26100.0",
"lessThan": "10.0.26100.33650",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
}
]
}
],
"published": "2026-10-13T19:21:40.010",
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88189",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "secure@microsoft.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "secure@microsoft.com",
"description": [
{
"lang": "en",
"value": "CWE-125"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally."
}
],
"lastModified": "2026-10-16T17:37:44.710",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "15BDFD52-C4C7-440A-B97C-D7637E77AFAC",
"versionEndExcluding": "10.0.17763.9376"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
"vulnerable": true,
"matchCriteriaId": "A1A74FEC-9922-4060-A2C0-06080FB4DDA8",
"versionEndExcluding": "10.0.17763.9376"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*",
"vulnerable": true,
"matchCriteriaId": "53D23AF8-230C-4B39-8A91-3881AA31989A",
"versionEndExcluding": "10.0.19044.7807"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "67F442ED-4C44-46E2-9DC1-C8B5E6DCEDBB",
"versionEndExcluding": "10.0.19044.7807"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*",
"vulnerable": true,
"matchCriteriaId": "9F10DA49-990A-41B9-A6AB-F672D1FF4685",
"versionEndExcluding": "10.0.19044.7807"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*",
"vulnerable": true,
"matchCriteriaId": "D17757C7-94AA-426C-85B8-82E265C34790",
"versionEndExcluding": "10.0.19045.7807"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "06420E5D-7B0B-4E29-BDCF-49B0C0ACE784",
"versionEndExcluding": "10.0.19045.7807"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*",
"vulnerable": true,
"matchCriteriaId": "B1853485-D4E4-4ACB-B832-F00AFEB10823",
"versionEndExcluding": "10.0.19045.7807"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*",
"vulnerable": true,
"matchCriteriaId": "C31937C6-EFB5-4325-9F94-0F356B164035",
"versionEndExcluding": "10.0.22631.7652"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "AAC3F2E7-6713-4BE0-9DAA-59310B4C3863",
"versionEndExcluding": "10.0.22631.7652"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*",
"vulnerable": true,
"matchCriteriaId": "E2A85326-7BE4-4F2C-AF37-45FD4B939D07",
"versionEndExcluding": "10.0.26100.9711"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "03291588-C7D5-445C-AD9F-03D3ADE6BE8A",
"versionEndExcluding": "10.0.26100.9711"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*",
"vulnerable": true,
"matchCriteriaId": "5E5700DF-EF80-4D08-9B32-E0481EAE8147",
"versionEndExcluding": "10.0.26200.9711"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "BA7D90B4-6AD5-4EF9-8709-01E4CED31779",
"versionEndExcluding": "10.0.26200.9711"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_26h2:*:*:*:*:*:*:arm64:*",
"vulnerable": true,
"matchCriteriaId": "8D5DCA1A-EF56-43AF-B079-011AE5C2F846",
"versionEndExcluding": "10.0.26300.9711"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_26h2:*:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "38D4479B-ACB0-4DC7-A4B1-F448C5B2EBD8",
"versionEndExcluding": "10.0.26300.9711"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1A35F3B3-7038-4745-981E-500054E3B406",
"versionEndExcluding": "10.0.17763.9376"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5CE768AA-2670-4798-9415-825DB7B84DF2",
"versionEndExcluding": "10.0.20348.5761"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "D95E80FE-F34C-4805-9A66-75D090E65BBB",
"versionEndExcluding": "10.0.26100.33650"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secure@microsoft.com"
}