{"id":"CVE-2025-43520","aliases":["EUVD-2025-203153","GHSA-c46j-8p94-c85x"],"status":"published","title":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in...","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00425,"percentile":0.37116,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-120","CWE-787"],"published":"2025-12-12T20:56:25Z","modified":"2026-10-07T11:10:00Z","kev":{"date_added":"2026-03-20","due_date":"2026-04-03","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2026-03-20"},{"source":"kev","since":"2026-03-20"}],"exploits":[{"source":"pocgithub","id":"df2029/cs-build","title":"df2029/cs-build","date":"2026-10-30","url":"https://github.com/df2029/cs-build"}],"products":[{"vendor":"apple","product":"ios and ipados"},{"vendor":"apple","product":"ipados"},{"vendor":"apple","product":"iphone_os"},{"vendor":"apple","product":"macos"},{"vendor":"apple","product":"multiple products"},{"vendor":"apple","product":"tvos"},{"vendor":"apple","product":"visionos"},{"vendor":"apple","product":"watchos"}],"references":[{"url":"https://support.apple.com/en-us/125632","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125633","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125634","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125635","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125636","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125637","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125638","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125639","tags":["Release Notes","Vendor Advisory"]},{"url":"https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/","tags":["third-party-advisory","Technical Description"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43520","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-43520"},{"url":"https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain"},{"url":"https://github.com/advisories/GHSA-c46j-8p94-c85x"}],"sources":{"cve":[{"id":"CVE-2025-43520","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.","status":"published","published":"2025-12-12T20:56:25.542Z","modified":"2026-09-21T16:47:43.935Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:32:26.964524Z"}],"euvd":[{"id":"EUVD-2025-203153","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.","status":"published","published":"2025-12-12T20:56:25Z","modified":"2026-09-21T16:47:43Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"exploited_since":"2026-03-20","updated_at":"2026-11-02T17:28:05.032636Z"}],"ghsa":[{"id":"GHSA-c46j-8p94-c85x","title":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in...","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in watchOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Tahoe 26.1, visionOS 26.1, tvOS 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, iOS 26.1 and iPadOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.","status":"published","published":"2025-12-12T21:31:39Z","modified":"2026-03-20T18:32:19Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-120","CWE-787"],"updated_at":"2026-11-02T15:06:44.698439Z"}],"kev":[{"id":"CVE-2025-43520","title":"Apple Multiple Products Classic Buffer Overflow Vulnerability","description":"Apple watchOS, iOS, iPadOS, macOS, visionOS, and tvOS contain a classic buffer overflow vulnerability which could allow a malicious application to cause unexpected system termination or write kernel memory.","cwes":["CWE-120"],"kev":{"date_added":"2026-03-20","due_date":"2026-04-03","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2025-43520","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.","status":"published","published":"2025-12-12T21:15:56.83Z","modified":"2026-10-07T11:10:00.153Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:11:50.400521Z"}]}}