CVE-2026-28892

#!/usr/bin/env python3 # PoC for CVE-2026-28892 (Conceptual) # This script simulates exploiting a permission bypass to write to a protected directory. # Note: Actual exploitation requires specific vulnerable macOS version and precise trigger. import os import sys def simulate_exploit(): target_path = "/System/Library/Extensions/vulnerable.kext" payload_path = "/tmp/malicious.kext" print(f"[*] Attempting to write payload to {target_path}...") # Simulate the logic flaw where permissions are not correctly checked # In a real scenario, this might involve a race condition (TOCTOU) or specific API misuse. try: # Hypothetical vulnerable function call if os.path.exists(payload_path): # This represents the bypass operation print("[!] Vulnerability triggered: Permission check bypassed.") # os.rename(payload_path, target_path) # Actual exploit action print("[+] Successfully modified protected file system.") else: print("[-] Payload not found.") except PermissionError: print("[-] Exploit failed: Permission denied (System patched or not vulnerable).") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": simulate_exploit()

{"cve": {"id": "CVE-2026-28892", "sourceIdentifier": "[email protected]", "published": "2026-03-25T01:17:12.673", "lastModified": "2026-03-27T20:16:27.437", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "A permissions issue was addressed by removing the vulnerable code. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to modify protected parts of the file system."}, {"lang": "es", "value": "Un problema de permisos fue abordado al eliminar el código vulnerable. Este problema está corregido en macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Una aplicación podría ser capaz de modificar partes protegidas del sistema de archivos."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "14.0", "versionEndExcluding": "14.8.5", "matchCriteriaId": "D66288AF-23BD-407A-81F5-F1DFBF84C622"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "15.0", "versionEndExcluding": "15.7.5", "matchCriteriaId": "DD21D2C9-BBEC-4E8E-B8D2-C92B7E6155E1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "26.0", "versionEndExcluding": "26.4", "matchCriteriaId": "6CF848CD-25D4-4371-BEF3-1ACCE47AD81F"}]}]}], "references": [{"url": "https://support.apple.com/en-us/126794", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126795", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126796", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}]}}