CVE-2026-20657

medium

Description

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. Parsing a maliciously crafted file may lead to an unexpected app termination.

References

https://support.apple.com/en-us/126799

https://support.apple.com/en-us/126796

https://support.apple.com/en-us/126795

https://support.apple.com/en-us/126794

https://support.apple.com/en-us/126793

https://support.apple.com/en-us/126792

Details

Source: Mitre, NVD

Published: 2026-03-25

Updated: 2026-05-11

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00019