CVE-2025-31221: apple ios and ipados Integer Overflow or Wraparound

Vulnerability summary

CVE-2025-31221 is a high (CVSS 7.5) Integer Overflow or Wraparound vulnerability in apple ios and ipados. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63.1% of scored vulnerabilities.

Timeline

1. 12-05-2025
   PublishedVulnerability first disclosed.
2. 02-04-2026
   Last modifiedVulnerability information updated.

Description

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.5 and iPadOS 18.5, iPadOS 17.7.7, macOS Sequoia 15.5, macOS Sonoma 14.7.6, macOS Ventura 13.7.6, tvOS 18.5, visionOS 2.5, watchOS 11.5. A remote attacker may be able to leak memory.

• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.