CVE-2026-20657

State: Published
Severity: 6.5 Medium
Published: Mar 25, 2026
Updated: Oct 26, 2026
Reserved: Nov 11, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125 Out-of-bounds Read
CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
iOS and iPadOSApple	before 18.7.7Affected before 26.4Affected
macOSApple	before 14.8.5Affected before 15.7.5Affected before 26.4Affected
visionOSApple	before 26.4Affected

References

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