CVE-2025-43300: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-23T21:36:47.658Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical Summary

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.

• Context preserved from previous revision: An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals. 1. Use only isolated environments and systems you own or are explicitly authorized to test.

Technical Details

• CVE: CVE-2025-43300
• KEV date added: 2025-08-21
• KEV due date: 2025-09-11
• NVD published: 2025-08-21
• NVD modified: 2025-11-26
• MITRE modified: 2026-02-26
• CVSS base score: 10
• CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
• CVSS exploitability score: 3.9
• CVSS impact score: 6
• Attack vector: Network
• Attack complexity: Low
• Privileges required: None
• User interaction: None
• Scope: Changed
• Confidentiality impact: High
• Integrity impact: High
• Availability impact: High

Versions and Products Impacted

• apple / ipados (versions: < 15.8.5)
• apple / ipados (versions: >= 16.0, < 16.7.12)
• apple / ipados (versions: >= 18.0, < 18.6.2)
• apple / iphone os (versions: < 15.8.5)
• apple / iphone os (versions: >= 16.0, < 16.7.12)
• apple / iphone os (versions: >= 18.0, < 18.6.2)
• apple / macos (versions: < 13.7.8)
• Apple / iOS and iPadOS (versions: unspecified)

Weakness Classification

• CWE-787
• Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.

Repositories for Lab Validation (Public Examples)

• 0xMarcio/cve | stars: 1177 | updated: 2026-03-23 | https://github.com/0xMarcio/cve
  Notes: Latest CVEs with their Proof of Concept exploits.
• Proteas/apple-cve | stars: 162 | updated: 2026-02-12 | https://github.com/Proteas/apple-cve
  Notes: apple cve list
• IsMyPhonePwned/mimic | stars: 1 | updated: 2026-02-12 | https://github.com/IsMyPhonePwned/mimic
  Notes: Rust library that detects files which look normal but have been crafted to exploit parsing vulnerabilities
• 0xcrypto/apple-cves | stars: 0 | updated: 2026-03-22 | https://github.com/0xcrypto/apple-cves
• timosarkar/0clickheaven | stars: 0 | updated: 2026-02-16 | https://github.com/timosarkar/0clickheaven
  Notes: the zero-click exploit heaven

People and Organizations Mentioned

• apple
• iOS, iPadOS, and macOS
• 0xMarcio
• Proteas
• IsMyPhonePwned
• 0xcrypto
• timosarkar

Practical Defensive Validation (Authorized Only)

1. Use only isolated environments and systems you own or are explicitly authorized to test.
2. Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
3. Inventory apple / ipados (versions: < 15.8.5) assets and confirm exact vulnerable versions with automated checks.
4. Patch in staged environments and validate closure with scanners + service health checks.
5. Map detections to MITRE ATT&CK tactics relevant to your environment and tune alert quality.

References

• NVD record: https://nvd.nist.gov/vuln/detail/CVE-2025-43300
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2025-43300
• CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
• KEV notes: https://support.apple.com/en-us/124925 ; https://support.apple.com/en-us/124926 ; https://support.apple.com/en-us/124927 ; https://support.apple.com/en-us/124928 ; https://support.apple.com/en-us/124929 ; https://nvd.nist.gov/vuln/detail/CVE-2025-43300
• https://support.apple.com/en-us/125141
• https://support.apple.com/en-us/125142
• http://seclists.org/fulldisclosure/2025/Sep/10
• http://seclists.org/fulldisclosure/2025/Sep/14
• http://seclists.org/fulldisclosure/2025/Sep/52
• https://github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.md
• https://github.com/cisagov/vulnrichment/issues/201
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43300
• Repository example: https://github.com/0xMarcio/cve
• Repository example: https://github.com/Proteas/apple-cve
• Repository example: https://github.com/IsMyPhonePwned/mimic
• Repository example: https://github.com/0xcrypto/apple-cves
• Repository example: https://github.com/timosarkar/0clickheaven

This content is for defensive security training and authorized validation only.