CVE-2026-20657

MEDIUM EPSS 41.3%

Published Mar 25, 20263mo ago · Modified Jun 17, 20261w ago

6.5 CVSS 3.1

Medium

Published Mar 25, 2026 3mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

6.5

Exploitability

2.8

Impact

3.6

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction Required

Scope Unchanged

Confidentiality None

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

41.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 3

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

CWE-125 Out-of-bounds Read Memory Safety

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 4

Vendor	Product	Version	Range
apple	ipados	*	<18.7.7
apple	iphone_os	*	<18.7.7
apple	macos	*	≥14.0 – <14.8.5
apple	macos	*	≥15.0 – <15.7.5

References 6

support.apple.com https://support.apple.com/en-us/126792
support.apple.com https://support.apple.com/en-us/126793

Release NotesVendor Advisory
support.apple.com https://support.apple.com/en-us/126794
support.apple.com https://support.apple.com/en-us/126795

Release NotesVendor Advisory
support.apple.com https://support.apple.com/en-us/126796

Release NotesVendor Advisory
support.apple.com https://support.apple.com/en-us/126799

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.