CVE-2025-59261

# CVE-2025-59261 - Microsoft Graphics Component TOCTOU Race Condition PoC # This is a conceptual PoC demonstrating the TOCTOU race condition exploitation pattern # Note: Actual exploitation requires precise timing and system-specific conditions import threading import time import ctypes import os import sys # Check if running with sufficient privileges def check_privileges(): try: return ctypes.windll.shell32.IsUserAnAdmin() except: return False # Simulated vulnerable graphics component interaction class GraphicsComponentExploit: def __init__(self): self.target_resource = None self.lock = threading.Lock() self.exploit_triggered = False def vulnerable_check(self): """Simulates the time-of-check operation in the graphics component""" # Component checks resource state/permissions here time.sleep(0.001) # Small delay creates the race window return self.target_resource def vulnerable_use(self, resource): """Simulates the time-of-use operation""" # Component uses the previously checked resource here if resource and self.exploit_triggered: print(f"[+] Privilege escalation successful using resource: {resource}") return True return False def race_condition_attack(self): """Exploits the TOCTOU race condition by modifying resource between check and use""" self.target_resource = "legitimate_resource" # Attacker thread rapidly modifies the resource for _ in range(10000): if self.exploit_triggered: break self.target_resource = "malicious_resource" time.sleep(0.0001) self.target_resource = "legitimate_resource" def trigger_exploit(self): """Main exploit trigger function""" print("[*] CVE-2025-59261 TOCTOU Race Condition Exploit") print(f"[*] Current privileges: {'Admin' if check_privileges() else 'User'}") # Launch attacker thread to create race condition attacker_thread = threading.Thread(target=self.race_condition_attack) attacker_thread.daemon = True attacker_thread.start() # Main thread repeatedly triggers the vulnerable operation for attempt in range(100000): checked = self.vulnerable_check() self.exploit_triggered = True if self.vulnerable_use(checked): print(f"[+] Exploit succeeded after {attempt} attempts") return True self.exploit_triggered = False print("[-] Exploit failed - race condition not won") return False if __name__ == "__main__": exploit = GraphicsComponentExploit() exploit.trigger_exploit()

{"cve": {"id": "CVE-2025-59261", "sourceIdentifier": "[email protected]", "published": "2025-10-14T17:16:09.300", "lastModified": "2025-10-17T15:52:53.297", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Time-of-check time-of-use (toctou) race condition in Microsoft Graphics Component 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:U/C:H/I:H/A:H", "baseScore": 7.0, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.0, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-367"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.22621.6060", "matchCriteriaId": "6F387FA2-66C8-4B70-A537-65806271F16A"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*", "versionEndIncluding": "10.0.22631.6060", "matchCriteriaId": "4AF873E4-B2FE-4504-BFF0-FC71121FC9A4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.26100.6899", "matchCriteriaId": "41E9F7AC-8E6D-43A0-A157-48A5E0B5BD0D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.26200.6899", "matchCriteriaId": "3B77A066-4F79-4B1F-AECF-58DB4C651EA5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.20348.4294", "matchCriteriaId": "B1C1EA69-6BB8-4E59-8659-43581FDB48B7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.25398.1913", "matchCriteriaId": "370C12D6-90EF-44BE-8070-AA0080C12600"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "versionEndIncluding": "10.0.26100.6899", "matchCriteriaId": "CD6268EB-C42B-406F-B3FF-6E694F93BF41"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59261", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}