CVE-2026-20637

CWE-416 — Use After Free9 documents5 sources
Severity
6.2MEDIUM
EPSS
0.0%
top 97.36%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
Apple IOS AND IpadosApple MacosApple Tvos+4 more
Timeline
PublishedMar 25

Description

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An app may be able to cause unexpected system termination.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.5 | Impact: 3.6

Affected Packages11 packages

▶CVEListV5apple/macos< 14.8.5+2
▶NVDapple/macos14.0 — 14.8.5+2
▶NVDapple/ipados26.0 — 26.3+1
▶CVEListV5apple/ios_and_ipados< 18.7.7+1
▶CVEListV5apple/tvos< 26.3

🔴Vulnerability Details

2
GHSA
GHSA-qmpr-r5h7-6c7x: A use after free issue was addressed with improved memory management↗2026-03-25
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CVEList
CVE-2026-20637: A use after free issue was addressed with improved memory management↗2026-03-25
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📋Vendor Advisories

5
Apple
CVE-2026-20637: iOS 26.3 and iPadOS 26.3↗2026-02-11
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Apple
CVE-2026-20637: visionOS 26.3↗2026-02-11
▶
Apple
CVE-2026-20637: macOS Tahoe 26.3↗2026-02-11
▶
Apple
CVE-2026-20637: tvOS 26.3↗2026-02-11
▶
Apple
CVE-2026-20637: watchOS 26.3↗2026-02-11
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-20637 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-20637 (MEDIUM CVSS 6.2) | A use after free issue was addresse | cvebase.io