Security Vulnerability Report
中文
CVE-2026-26168 CVSS 7.8 HIGH

CVE-2026-26168

Published: 2026-04-14 18:16:51
Last Modified: 2026-04-24 17:35:18

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVSS Details

CVSS Score
7.8
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* - VULNERABLE
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* - VULNERABLE
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* - VULNERABLE
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* - VULNERABLE
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* - VULNERABLE
Windows 10
Windows 11
Windows Server 2019/2022

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
/* * PoC for CVE-2026-26168 (Race Condition) * This is a generic template for exploiting a race condition in a kernel driver. * Compile with: cl.exe poc.c */ #include <windows.h> #include <stdio.h> HANDLE hDevice; DWORD WINAPI ThreadFunc(LPVOID lpParam) { // Simulate triggering the race condition // In a real exploit, specific IOCTLs and memory manipulation would happen here DeviceIoControl(hDevice, 0xXXXX, NULL, 0, NULL, 0, NULL, NULL); return 0; } int main() { hDevice = CreateFileA("\\\\.\\Afd", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL); if (hDevice == INVALID_HANDLE_VALUE) { printf("Failed to open device.\n"); return 1; } printf("Triggering race condition...\n"); for (int i = 0; i < 2; i++) { HANDLE hThread = CreateThread(NULL, 0, ThreadFunc, NULL, 0, NULL); WaitForSingleObject(hThread, INFINITE); CloseHandle(hThread); } CloseHandle(hDevice); return 0; }

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-26168", "sourceIdentifier": "[email protected]", "published": "2026-04-14T18:16:50.607", "lastModified": "2026-04-24T17:35:18.193", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.1, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-416"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.14393.9060", "matchCriteriaId": "158C16A3-547E-4130-8428-8E429C37E573"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*", "versionEndExcluding": "10.0.14393.9060", "matchCriteriaId": "58E1A340-D49A-4EBB-A750-876922ACD5CA"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.17763.8644", "matchCriteriaId": "64248504-2307-45FC-8FF3-7A227CFD8675"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*", "versionEndExcluding": "10.0.17763.8644", "matchCriteriaId": "9B1465B1-BDE6-4634-8F12-43F71D68A4D6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*", "versionEndExcluding": "10.0.19044.7184", "matchCriteriaId": "88A175C4-E033-4FE7-B2BF-8BAE14321BC4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.19044.7184", "matchCriteriaId": "86DBF14A-F486-4FE7-9126-D1D54952FC6C"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*", "versionEndExcluding": "10.0.19044.7184", "matchCriteriaId": "C375372B-D3D4-4B11-AAD8-69AC344C24BC"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*", "versionEndExcluding": "10.0.19045.7184", "matchCriteriaId": "8CE2E268-E776-4697-9E43-33ABA4CDBE05"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.19045.7184", "matchCriteriaId": "269B8E88-6473-41DD-BA33-D9184B82CA58"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*", "versionEndExcluding": "10.0.19045.7184", "matchCriteriaId": "FCBB431B-EF21-4454-BDA3-D8F276BE7A64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*", "versionEndExcluding": "10.0.22631.6936", "matchCriteriaId": "B33CE091-B873-4C30-BA05-54A8C1839212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.22631.6936", "matchCriteriaId": "E3AF28F3-D486-4B88-9E0E-371241024174"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*", "versionEndExcluding": "10.0.26100.8246", "matchCriteriaId": "94EB36C7-1FF2-4B44-AD91-F3540F09393E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.26100.8246", "matchCriteriaId": "14B23C3F-C8AC-491A-BCA5-EB6982C8F9E9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*", "versionEndExcluding": "10.0.26200.8246", "matchCriteriaId": "361B5DAB-8D1F-45D7-A33C-F49EBA56B5F8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.26200.8246", "matchCriteriaId": "ADC6CE99-AB5D-4DD5-82A9-892366C4B2FD"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*", "versionEndExcluding": "10.0.28000.1836", "matchCriteriaId": "690E74A8-E72C-47B6-96EB-37C48D69A635"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.28000.1836", "matchCriteriaId": "13A01FA1-08DC-4E33-9FFC-AB4BCD9634CA"}, {"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 ... 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