MSRC_CVE-2026-21246
Vulnerability from csaf_microsoft - Published: 2026-02-10 08:00 - Updated: 2026-02-10 08:00Summary
Windows Graphics Component Elevation of Privilege Vulnerability
Severity
Important
Notes
Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer: 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.
Customer Action: Required. The vulnerability documented by this CVE requires customer action to resolve.
CWE-122
- Heap-based Buffer Overflow
Vendor Fix
10.0.17763.8389:Security Update:https://support.microsoft.com/help/5075904
https://support.microsoft.com/help/5075904
Vendor Fix
10.0.20348.4773:Security Update:https://support.microsoft.com/help/5075906
https://support.microsoft.com/help/5075906
Vendor Fix
10.0.20348.4711:Security Hotpatch Update:https://support.microsoft.com/help/5075943
https://support.microsoft.com/help/5075943
Vendor Fix
10.0.19044.6937:Security Update:https://support.microsoft.com/help/5075912
https://support.microsoft.com/help/5075912
Vendor Fix
10.0.19045.6937:Security Update:https://support.microsoft.com/help/5075912
https://support.microsoft.com/help/5075912
Vendor Fix
10.0.26100.32370:Security Update:https://support.microsoft.com/help/5075899
https://support.microsoft.com/help/5075899
Vendor Fix
10.0.26100.32313:Security Hotpatch Update:https://support.microsoft.com/help/5075942
https://support.microsoft.com/help/5075942
Vendor Fix
10.0.26200.7840:Security Update:https://support.microsoft.com/help/5077181
https://support.microsoft.com/help/5077181
Vendor Fix
10.0.26200.7781:Security Hotpatch Update:https://support.microsoft.com/help/5077212
https://support.microsoft.com/help/5077212
Vendor Fix
10.0.22631.6649:Security Update:https://support.microsoft.com/help/5075941
https://support.microsoft.com/help/5075941
Vendor Fix
10.0.25398.2149:Security Update:https://support.microsoft.com/help/5075897
https://support.microsoft.com/help/5075897
Vendor Fix
10.0.26100.7840:Security Update:https://support.microsoft.com/help/5077181
https://support.microsoft.com/help/5077181
Vendor Fix
10.0.26100.7781:Security Hotpatch Update:https://support.microsoft.com/help/5077212
https://support.microsoft.com/help/5077212
Vendor Fix
10.0.26100.7840:Security Update:https://support.microsoft.com/help/5077181
https://support.microsoft.com/help/5077181
Vendor Fix
10.0.14393.8868:Security Update:https://support.microsoft.com/help/5075999
https://support.microsoft.com/help/5075999
Vendor Fix
6.2.9200.25923:Monthly Rollup:https://support.microsoft.com/help/5075971
https://support.microsoft.com/help/5075971
Vendor Fix
6.3.9600.23022:Monthly Rollup:https://support.microsoft.com/help/5075970
https://support.microsoft.com/help/5075970
References
Acknowledgments
UlanBird
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"name": "Heap-based Buffer Overflow"
},
"notes": [
{
"category": "general",
"text": "Microsoft",
"title": "Assigning CNA"
},
{
"category": "faq",
"text": "An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.",
"title": "What privileges could be gained by an attacker who successfully exploited this vulnerability?"
}
],
"product_status": {
"fixed": [
"10378",
"10379",
"10483",
"10543",
"10816",
"10852",
"10853",
"10855",
"11568",
"11569",
"11571",
"11572",
"11923",
"11924",
"11929",
"11930",
"11931",
"12097",
"12098",
"12099",
"12242",
"12243",
"12244",
"12389",
"12390",
"12436",
"12437",
"20437",
"20438"
],
"known_affected": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19",
"20",
"21",
"22",
"23",
"24",
"25",
"26",
"27",
"28",
"29"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-21246 Windows Graphics Component Elevation of Privilege Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21246"
},
{
"category": "self",
"summary": "CVE-2026-21246 Windows Graphics Component Elevation of Privilege Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-21246.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.17763.8389:Security Update:https://support.microsoft.com/help/5075904",
"product_ids": [
"21",
"20",
"19",
"18"
],
"url": "https://support.microsoft.com/help/5075904"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.20348.4773:Security Update:https://support.microsoft.com/help/5075906",
"product_ids": [
"17",
"16"
],
"url": "https://support.microsoft.com/help/5075906"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.20348.4711:Security Hotpatch Update:https://support.microsoft.com/help/5075943",
"product_ids": [
"17",
"16"
],
"url": "https://support.microsoft.com/help/5075943"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.19044.6937:Security Update:https://support.microsoft.com/help/5075912",
"product_ids": [
"15",
"14",
"13"
],
"url": "https://support.microsoft.com/help/5075912"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.19045.6937:Security Update:https://support.microsoft.com/help/5075912",
"product_ids": [
"12",
"11",
"10"
],
"url": "https://support.microsoft.com/help/5075912"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.26100.32370:Security Update:https://support.microsoft.com/help/5075899",
"product_ids": [
"3",
"4"
],
"url": "https://support.microsoft.com/help/5075899"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.26100.32313:Security Hotpatch Update:https://support.microsoft.com/help/5075942",
"product_ids": [
"3",
"4"
],
"url": "https://support.microsoft.com/help/5075942"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.26200.7840:Security Update:https://support.microsoft.com/help/5077181",
"product_ids": [
"2",
"1"
],
"url": "https://support.microsoft.com/help/5077181"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.26200.7781:Security Hotpatch Update:https://support.microsoft.com/help/5077212",
"product_ids": [
"2",
"1"
],
"url": "https://support.microsoft.com/help/5077212"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.22631.6649:Security Update:https://support.microsoft.com/help/5075941",
"product_ids": [
"9",
"8"
],
"url": "https://support.microsoft.com/help/5075941"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.25398.2149:Security Update:https://support.microsoft.com/help/5075897",
"product_ids": [
"7"
],
"url": "https://support.microsoft.com/help/5075897"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.26100.7840:Security Update:https://support.microsoft.com/help/5077181",
"product_ids": [
"6"
],
"url": "https://support.microsoft.com/help/5077181"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.26100.7781:Security Hotpatch Update:https://support.microsoft.com/help/5077212",
"product_ids": [
"6",
"5"
],
"url": "https://support.microsoft.com/help/5077212"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.26100.7840:Security Update:https://support.microsoft.com/help/5077181",
"product_ids": [
"5"
],
"url": "https://support.microsoft.com/help/5077181"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "10.0.14393.8868:Security Update:https://support.microsoft.com/help/5075999",
"product_ids": [
"24",
"23",
"25",
"22"
],
"url": "https://support.microsoft.com/help/5075999"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "6.2.9200.25923:Monthly Rollup:https://support.microsoft.com/help/5075971",
"product_ids": [
"29",
"28"
],
"url": "https://support.microsoft.com/help/5075971"
},
{
"category": "vendor_fix",
"date": "2026-02-10T08:00:00.000Z",
"details": "6.3.9600.23022:Monthly Rollup:https://support.microsoft.com/help/5075970",
"product_ids": [
"27",
"26"
],
"url": "https://support.microsoft.com/help/5075970"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"environmentalsScore": 0.0,
"exploitCodeMaturity": "UNPROVEN",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"remediationLevel": "OFFICIAL_FIX",
"reportConfidence": "CONFIRMED",
"scope": "UNCHANGED",
"temporalScore": 6.8,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19",
"20",
"21",
"22",
"23",
"24",
"25",
"26",
"27",
"28",
"29"
]
}
],
"threats": [
{
"category": "impact",
"details": "Elevation of Privilege"
},
{
"category": "exploit_status",
"details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely"
}
],
"title": "Windows Graphics Component Elevation of Privilege Vulnerability"
}
]
}
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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.
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