CVE-2025-43529

CISA description

Apple iOS, iPadOS, macOS, and other Apple products contain a use-after-free vulnerability in WebKit. Processing maliciously crafted web content may lead to memory corruption. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

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.

Notes & references

• https://support.apple.com/en-us/125884
• https://support.apple.com/en-us/125892
• https://support.apple.com/en-us/125885
• https://support.apple.com/en-us/125886
• https://support.apple.com/en-us/125889
• https://nvd.nist.gov/vuln/detail/CVE-2025-43529

Where this lands in 800-53

Vulnerability data triggers these controls during assessment and continuous monitoring.

• RA-5 · Vulnerability Monitoring and Scanning
• SI-2 · Flaw Remediation
• CM-6 · Configuration Settings
• SI-7 · Software, Firmware, and Information Integrity
• CM-8 · System Component Inventory

External lookups

• NVD · CVE-2025-43529
• CVE.org · CVE-2025-43529
• CISA KEV catalog (canonical)