CVE-2026-20621 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Apple IOS AND Ipados

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer9 documents4 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.56%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Apple IOS AND IpadosApple MacosApple Visionos+2 more
Timeline
PublishedFeb 11
Latest updateFeb 12

Description

The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages6 packages

▶CVEListV5apple/macos< 15.7.4+2
▶NVDapple/macos15.0 — 15.7.4+2
▶NVDapple/ipados< 26.3
▶CVEListV5apple/ios_and_ipados< 18.7.5+1
▶CVEListV5apple/visionos< 26.3

🔴Vulnerability Details

2
GHSA
GHSA-q5q3-fgwr-rr9h: The issue was addressed with improved memory handling↗2026-02-12
▶
CVEList
CVE-2026-20621: The issue was addressed with improved memory handling↗2026-02-11
▶

📋Vendor Advisories

6
Apple
CVE-2026-20621: macOS Tahoe 26.3↗2026-02-11
▶
Apple
CVE-2026-20621: iOS 26.3 and iPadOS 26.3↗2026-02-11
▶
Apple
CVE-2026-20621: macOS Sonoma 14.8.4↗2026-02-11
▶
Apple
CVE-2026-20621: visionOS 26.3↗2026-02-11
▶
Apple
CVE-2026-20621: iOS 18.7.5 and iPadOS 18.7.5↗2026-02-11
▶
CVE-2026-20621 — Apple IOS AND Ipados vulnerability | cvebase