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CVE-2026-45596

🗓️ 09 Jun 2026 17:05:36Reported by microsoftType 
cve
 cve🔗 web.nvd.nist.gov👁 4 Views

CVE-2026-45596: Use-after-free in Windows Ancillary Function Driver enables local privilege escalation.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
Circl		CVE-2026-45596
9 Jun 202615:44
–circl
Cvelist		CVE-2026-45596 Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
9 Jun 202617:05
–cvelist
EUVD		EUVD-2026-35560
9 Jun 202617:05
–euvd
Microsoft KB		June 9, 2026—KB5093998 (OS Build 22631.7219)
9 Jun 202614:00
–mskb
Microsoft KB		June 9, 2026—KB5094041 (Monthly Rollup)
9 Jun 202614:00
–mskb
Microsoft KB		June 9, 2026—KB5094042 (Monthly Rollup)
9 Jun 202614:00
–mskb
Microsoft KB		June 9, 2026—KB5094122 (OS Build 14393.9234)
9 Jun 202614:00
–mskb
Microsoft KB		June 9, 2026—KB5094125 (OS Build 26100.32995)
9 Jun 202614:00
–mskb
Microsoft KB		June 9, 2026—KB5094128 (OS Build 20348.5256)
9 Jun 202614:00
–mskb
Microsoft KB		June 9, 2026—KB5095051 (OS Build 28000.2269)
9 Jun 202614:00
–mskb
Rows per page
Vulners
CNA
Node
microsoftwindows_10_1607Range10.0.14393.0–10.0.14393.9234x32
OR
microsoftwindows_10_1607Range10.0.14393.0–10.0.14393.9234x64
Node
microsoftwindows_10_1809Range10.0.17763.0–10.0.17763.8880x32
OR
microsoftwindows_10_1809Range10.0.17763.0–10.0.17763.8880x64
Node
microsoftwindows_10_21h2Range10.0.19044.0–10.0.19044.7417x32
OR
microsoftwindows_10_21h2Range10.0.19044.0–10.0.19044.7417arm64
OR
microsoftwindows_10_21h2Range10.0.19044.0–10.0.19044.7417x64
Node
microsoftwindows_11_22h2Range10.0.19045.0–10.0.19045.7417x32
OR
microsoftwindows_11_22h2Range10.0.19045.0–10.0.19045.7417arm64
OR
microsoftwindows_11_22h2Range10.0.19045.0–10.0.19045.7417x64
Node
microsoftwindows_11_22h2Range10.0.22631.0–10.0.22631.7219arm64
Node
microsoftwindows_11_23h2Range10.0.22631.0–10.0.22631.7219x64
Node
microsoftwindows_11_24h2Range10.0.26100.0–10.0.26100.8655arm64
OR
microsoftwindows_11_24h2Range10.0.26100.0–10.0.26100.8655x64
Node
microsoftwindows_11_25h2Range10.0.26200.0–10.0.26200.8655arm64
OR
microsoftwindows_11_25h2Range10.0.26200.0–10.0.26200.8655x64
Node
microsoftwindows_11_22h2Range10.0.28000.0–10.0.28000.2269arm64
OR
microsoftwindows_11_22h2Range10.0.28000.0–10.0.28000.2269x64
Node
microsoftwindows_server_2008Range6.2.9200.0–6.2.9200.26132x64
Node
microsoftwindows_server_2008Range6.2.9200.0–6.2.9200.26132server_core_installationx64
Node
microsoftwindows_server_2008Range6.3.9600.0–6.3.9600.23228x64
Node
microsoftwindows_server_2008Range6.3.9600.0–6.3.9600.23228server_core_installationx64
Node
microsoftwindows_server_2008Range10.0.14393.0–10.0.14393.9234x64
Node
microsoftwindows_server_2008Range10.0.14393.0–10.0.14393.9234server_core_installationx64
Node
microsoftwindows_server_2008Range10.0.17763.0–10.0.17763.8880x64
Node
microsoftwindows_server_2008Range10.0.17763.0–10.0.17763.8880server_core_installationx64
Node
microsoftwindows_server_2008Range10.0.20348.0–10.0.20348.5256x64
Node
microsoftwindows_server_2008Range10.0.26100.0–10.0.26100.32995x64
Node
microsoftwindows_server_2008Range10.0.26100.0–10.0.26100.32995server_core_installationx64
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  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 1809",
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    "product": "Windows 11 version 23H2",
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  {
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  },
  {
    "vendor": "Microsoft",
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  },
  {
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  {
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    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2022",
    "platforms": [
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    "versions": [
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    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2025",
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    "versions": [
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    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2025 (Server Core installation)",
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    ],
    "versions": [
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      }
    ]
  }
]

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09 Jun 2026 21:50Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.17
CWE-362CWE-416
CVE-2026-45596Use after freeAncillary Function DriverWindows SocketsLocal privilege escalation
4