What is CVE-2025-43424?

CVE-2025-43424 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2025-11-04.

How severe is CVE-2025-43424?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Buffer overflow in Apple iOS And Ipados

CVE-2025-43424

The issue was addressed with improved bounds checks. This issue is fixed in iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1. A malicious HID device may cause an unexpected process crash.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (19.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

product-security@apple.com (Release Notes, Vendor Advisory)
product-security@apple.com

Frequently asked questions

What is CVE-2025-43424?: CVE-2025-43424 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2025-11-04.
How severe is CVE-2025-43424?: Medium severity. CVSS v3 base score is 6.5 out of 10.