FKIE_CVE-2026-21253
Vulnerability from fkie_nvd - Published: 2026-02-10 18:16 - Updated: 2026-02-11 19:26
Severity ?
Summary
Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
References
| URL | Tags | ||
|---|---|---|---|
| secure@microsoft.com | https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21253 | Vendor Advisory |
Impacted products
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*",
"matchCriteriaId": "E78A20FD-B910-43DF-BE89-E971E2FD0049",
"versionEndExcluding": "10.0.14393.8868",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*",
"matchCriteriaId": "B941280B-97F6-4F60-80A3-40482A74488D",
"versionEndExcluding": "10.0.14393.8868",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*",
"matchCriteriaId": "C09C54DA-6AB0-4696-A2F2-C11CFC292EA9",
"versionEndExcluding": "10.0.17763.8389",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
"matchCriteriaId": "369B4E41-3895-4CB7-BD37-D2E4A4D52FB9",
"versionEndExcluding": "10.0.17763.8389",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*",
"matchCriteriaId": "EDB3FD9A-2786-4EC1-8989-2B0D054E0307",
"versionEndExcluding": "10.0.19044.6937",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*",
"matchCriteriaId": "893DBA65-116B-4AE0-80E1-50458CB5FDAD",
"versionEndExcluding": "10.0.19044.6937",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*",
"matchCriteriaId": "37E2BFF1-28C0-4FA0-9A6C-020146E4AD54",
"versionEndExcluding": "10.0.19044.6937",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*",
"matchCriteriaId": "3ABF7E9C-769A-4330-AD97-FE3CD766E577",
"versionEndExcluding": "10.0.19045.6937",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*",
"matchCriteriaId": "F54B0C64-9A1F-470B-9824-322CF362507F",
"versionEndExcluding": "10.0.19045.6937",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*",
"matchCriteriaId": "A5BD3F0C-1E6F-4937-806C-B87CA19C2830",
"versionEndExcluding": "10.0.19045.6937",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*",
"matchCriteriaId": "B273EF5A-3157-4842-AE91-CEC289813902",
"versionEndExcluding": "10.0.22631.6649",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*",
"matchCriteriaId": "CD2513FC-D399-4DBF-921F-13B4D1497127",
"versionEndExcluding": "10.0.22631.6649",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*",
"matchCriteriaId": "B08450A0-0F7E-4A05-8989-900221992766",
"versionEndExcluding": "10.0.26100.7781",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*",
"matchCriteriaId": "9D30B348-DAE7-43EC-85FA-38E1715258A9",
"versionEndExcluding": "10.0.26100.7781",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*",
"matchCriteriaId": "8F23FFCF-9C69-4D27-AF21-D09A6041AA3A",
"versionEndExcluding": "10.0.26200.7781",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*",
"matchCriteriaId": "D1D93202-BDDB-438F-934E-1FE904B3651B",
"versionEndExcluding": "10.0.26200.7781",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*",
"matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*",
"matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:-:*:x64:*",
"matchCriteriaId": "C9801763-02E0-471B-A571-6E9733A5358D",
"versionEndExcluding": "10.0.14393.8868",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:-:*:x64:*",
"matchCriteriaId": "5D132B4B-F718-420D-B31D-39390ADB6ABB",
"versionEndExcluding": "10.0.17763.8389",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:-:*:x64:*",
"matchCriteriaId": "E1DDF720-A228-412B-BF01-ECD759C35A24",
"versionEndExcluding": "10.0.20348.4711",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:-:*:x64:*",
"matchCriteriaId": "40F60E69-9FF7-4613-84D3-1982F357A82E",
"versionEndExcluding": "10.0.25398.2149",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*",
"matchCriteriaId": "62BDF24B-B74A-4F48-A6A5-CA375ECE9B5C",
"versionEndExcluding": "10.0.26100.32313",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally."
}
],
"id": "CVE-2026-21253",
"lastModified": "2026-02-11T19:26:52.133",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 5.9,
"source": "secure@microsoft.com",
"type": "Secondary"
}
]
},
"published": "2026-02-10T18:16:27.000",
"references": [
{
"source": "secure@microsoft.com",
"tags": [
"Vendor Advisory"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21253"
}
],
"sourceIdentifier": "secure@microsoft.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "secure@microsoft.com",
"type": "Secondary"
}
]
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…