{
"document": {
"acknowledgments": [
{
"names": [
"Minjea Park with Stealien"
]
},
{
"names": [
"CrowdStrike Advanced Research Team with CrowdStrike"
]
},
{
"names": [
"Minwoo Jeong (P1nkjelly) with KAIST Hacking Lab"
]
}
],
"aggregate_severity": {
"namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
"text": "Important"
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"category": "csaf_security_advisory",
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"distribution": {
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"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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"publisher": {
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"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
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"references": [
{
"category": "self",
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"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50416"
},
{
"category": "self",
"summary": "CVE-2026-50416 Win32k Information Disclosure Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-50416.json"
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{
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"url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
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{
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"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
},
{
"category": "external",
"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
}
],
"title": "Win32k Information Disclosure Vulnerability",
"tracking": {
"current_release_date": "2026-07-14T07:00:00.000Z",
"generator": {
"date": "2026-07-15T22:22:03.332Z",
"engine": {
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"version": "1.0"
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},
"id": "msrc_CVE-2026-50416",
"initial_release_date": "2026-07-14T07:00:00.000Z",
"revision_history": [
{
"date": "2026-07-14T07:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
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"status": "final",
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},
"notes": [
{
"category": "general",
"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?"
},
{
"category": "faq",
"text": "An attacker who successfully exploited the vulnerability could view some sensitive information (Confidentiality) but not all resources within the impacted component may be divulged to the attacker. The attacker cannot make changes to disclosed information (Integrity) or limit access to the resource (Availability).",
"title": "According to the CVSS metrics, successful exploitation of this vulnerability could lead to some loss of confidentiality (C:L),but lead to no loss of availability (A:N) and integrity (I:N)? What does that mean for this vulnerability?"
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"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 3.3,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"environmentalScore": 0.0,
"exploitCodeMaturity": "UNPROVEN",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"remediationLevel": "OFFICIAL_FIX",
"reportConfidence": "CONFIRMED",
"scope": "UNCHANGED",
"temporalScore": 2.9,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C",
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"details": "Information Disclosure"
},
{
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}
],
"title": "Win32k Information Disclosure Vulnerability"
}
]
}