CVE-2026-45585

#!/usr/bin/env python3 # PoC for CVE-2026-45585 (YellowKey) - Simulation # This script demonstrates the logic required to trigger the bypass. # Physical access is mandatory (AV:P). import sys import time def check_physical_access(): """ Verify if the attacker has physical access. This is a prerequisite for AV:P vulnerabilities. """ return True def send_yellowkey_payload(): """ Simulate the 'YellowKey' input sequence that triggers the security feature bypass in Windows. """ print("[*] Injecting YellowKey payload sequence...") # Simulating hardware delay time.sleep(1) # In a real exploit, this would interface with hardware drivers # or direct bus access to send the specific bypass signal. print("[+] Security check bypassed.") print("[+] Gaining unauthorized system access...") return True def exploit(): if not check_physical_access(): print("[-] Error: Physical access required.") sys.exit(1) print("[*] Starting CVE-2026-45585 Exploit...") try: if send_yellowkey_payload(): print("[!] Exploit successful. System compromised.") except Exception as e: print(f"[-] Exploit failed: {e}") if __name__ == "__main__": exploit()

{"cve": {"id": "CVE-2026-45585", "sourceIdentifier": "[email protected]", "published": "2026-05-20T00:16:44.380", "lastModified": "2026-05-20T16:42:42.177", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Microsoft is aware of a security feature bypass vulnerability in Windows publicly referred to as "YellowKey". The proof of concept for this vulnerability has been made public violating coordinated vulnerability best practices.\nWe are issuing this CVE to provide mitigation guidance that can be implemented to protect against this vulnerability until the security update is made available."}], "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:H", "baseScore": 6.8, "baseSeverity": "MEDIUM", "attackVector": "PHYSICAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-77"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*", "matchCriteriaId": "1799DC19-34BA-42B4-A6DC-02774202DE22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*", "matchCriteriaId": "AAAB3FDE-4FF2-47DE-9BDA-25B2855054E7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*", "matchCriteriaId": "DA9F6F61-46D3-4ECD-8B5D-1484222B7364"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "matchCriteriaId": "9B12238F-DF99-4247-B645-259C3FD98F61"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45585", "source": "[email protected]", "tags": ["Vendor Advisory", "Mitigation"]}, {"url": "https://github.com/Nightmare-Eclipse/YellowKey", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"]}]}}