CVE-2026-32088

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Biometric Service allows an unauthorized attacker to bypass a security feature with a physical attack.

CVSS Details

CVSS Score

6.1

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Configurations (Affected Products)

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

cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* - VULNERABLE

cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* - VULNERABLE

Windows (具体版本参考微软安全公告)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import threading
import time

# Simulated target function representing the vulnerable biometric check
shared_resource = {"status": "locked"}

def malicious_thread():
    """Simulates an attacker attempting to bypass the check during the race window."""
    print("[Attacker] Waiting for race window...")
    while True:
        if shared_resource["status"] == "checking":
            # Exploit the race condition: modify status before lock is re-acquired
            shared_resource["status"] = "bypassed"
            print("[Attacker] Race condition triggered! Status bypassed.")
            break

def service_thread():
    """Simulates the Windows Biometric Service operation."""
    print("[Service] Starting biometric verification...")
    shared_resource["status"] = "checking"
    # Simulate processing time without proper locking
    time.sleep(0.001)
    
    if shared_resource["status"] == "checking":
        shared_resource["status"] = "verified"
        print("[Service] Verification successful.")
    else:
        print(f"[Service] Anomalous state detected: {shared_resource['status']}")

if __name__ == "__main__":
    # Create threads to simulate concurrent execution
    t1 = threading.Thread(target=service_thread)
    t2 = threading.Thread(target=malicious_thread)

    # Start threads to trigger the race condition
    t2.start()
    t1.start()

    t1.join()
    t2.join()
    print(f"Final Resource Status: {shared_resource['status']}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-32088
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-32088
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-32088/
[4] VulDB https://vuldb.com/cve/CVE-2026-32088
[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32088

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-32088", "sourceIdentifier": "[email protected]", "published": "2026-04-14T18:17:13.200", "lastModified": "2026-04-21T15:05:27.873", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Biometric Service allows an unauthorized attacker to bypass a security feature with a physical attack."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "PHYSICAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 0.9, "impactScore": 5.2}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 5.7, "baseSeverity": "MEDIUM", "attackVector": "PHYSICAL", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 0.5, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-362"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"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_2019:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.8644", "matchCriteriaId": "647CF9B5-8898-469B-9C09-D372A7843187"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "versionEnd ... (truncated)