PT-2026-27534 · Apple · Ipados+4

Andrew Becker · Published 2026-03-24 · Updated 2026-05-11 · CVE-2026-20657

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Apple iOS versions prior to 18.7.7 Apple iPadOS versions prior to 18.7.7 Apple macOS Sequoia versions prior to 15.7.5 Apple macOS Sonoma versions prior to 14.8.5

Description A flaw exists in how the software handles specially crafted files. This can result in an application unexpectedly closing.

Recommendations Update Apple iOS to version 18.7.7. Update Apple iPadOS to version 18.7.7. Update Apple macOS Sequoia to version 15.7.5. Update Apple macOS Sonoma to version 14.8.5.

Fix

Buffer Overflow

Out of bounds Read

Memory Corruption

Weakness Enumeration

CWE-119

CWE-125

CWE-787

Related Identifiers

BDU:2026-04660

CVE-2026-20657

Affected Products

Apple Macos

Ios

Ipados

Macos Sequoia

Macos Sonoma

References · 12

• https://support.apple.com/en-us/126796 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20657 · Security Note
• https://support.apple.com/en-us/126793 · Vendor Advisory
• https://support.apple.com/en-us/126795 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04660 · Security Note
• https://support.apple.com/en-us/126794 · Note
• https://twitter.com/vuldb/status/2036693117022445824 · Twitter Post
• https://twitter.com/CVEarity/status/2044461532311130597 · Twitter Post
• https://support.apple.com/en-us/126792 · Note
• https://t.me/cveNotify/163113 · Telegram Post
• https://support.apple.com/en-us/126799 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20657 · Note