Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
Apple iOS, iPadOS, macOS, and other Apple products contain an out-of-bounds write vulnerability in WebKit that may allow maliciously crafted web content to break out of Web Content sandbox. 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.
- Vendor
- Apple
- Product
- Multiple Products
- CVSS
- 10.0
- EPSS (exploit probability)
- 3.8%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2025-24201 being exploited?
Yes. CISA added CVE-2025-24201 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 3.8% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-21. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Apple CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2026-86950 CoreGraphics memory confusion in Apple iOS 26, iPadOS, macOS 26, macOS 15write-up | [ HIGH ] | 8.8 | 1.2% | |
| CVE-2026-65400 Apple macOS Improper Authentication Vulnerability | [ CRITICAL ] | 9.8 | 1.7% | |
| CVE-2025-43520 Apple Multiple Products Classic Buffer Overflow Vulnerability | [ MEDIUM ] | 5.5 | 0.4% | |
| CVE-2025-43510 Apple Multiple Products Improper Locking Vulnerability | [ HIGH ] | 7.8 | 0.4% | |
| CVE-2025-31277 Apple Multiple Products Buffer Overflow Vulnerability | [ HIGH ] | 8.8 | 1.7% | |
| CVE-2023-43000 Apple Multiple products Use-After-Free Vulnerability | [ HIGH ] | 8.8 | 4.0% | |
| CVE-2023-41974 Apple iOS and iPadOS Use-After-Free Vulnerability | [ HIGH ] | 7.8 | 2.0% | |
| CVE-2021-30952 Apple Multiple Products Integer Overflow or Wraparound Vulnerability | [ HIGH ] | 7.8 | 7.0% |