CVE-2026-20644

CWE-119 — Buffer OverflowCWE-416 — Use After FreeCWE-787 — Out-of-bounds WriteCWE-120 — Classic Buffer Overflow14 documents9 sources
Severity
6.5MEDIUM
EPSS
0.0%
top 86.56%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
Apple IOS AND IpadosApple MacosApple Safari+3 more
Timeline
PublishedFeb 11
Latest updateMar 19

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages11 packages

▶NVDapple/ipados26.0 — 26.3+1
▶CVEListV5apple/ios_and_ipados< 18.7.5+1
▶CVEListV5apple/macos< 26.3
▶NVDapple/macos< 26.3
▶CVEListV5apple/safari< 26.3

🔴Vulnerability Details

4
GHSA
GHSA-pxhf-qg7h-8x8m: The issue was addressed with improved memory handling↗2026-02-12
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OSV
CVE-2026-20644: The issue was addressed with improved memory handling↗2026-02-11
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CVEList
CVE-2026-20644: The issue was addressed with improved memory handling↗2026-02-11
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OSV
CVE-2026-20644: The issue was addressed with improved memory handling↗2026-02-11
▶

📋Vendor Advisories

7
Red Hat
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash↗2026-03-18
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Apple
CVE-2026-20644: Safari 26.3↗2026-02-11
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Apple
CVE-2026-20644: iOS 26.3 and iPadOS 26.3↗2026-02-11
▶
Apple
CVE-2026-20644: macOS Tahoe 26.3↗2026-02-11
▶
Apple
CVE-2026-20644: iOS 18.7.5 and iPadOS 18.7.5↗2026-02-11
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-20644 Impact, Exploitability, and Mitigation Steps | Wiz↗
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💬Community

1
Bugzilla
CVE-2026-20644 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash [fedora-all]↗2026-03-19
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CVE-2026-20644 (MEDIUM CVSS 6.5) | The issue was addressed with improv | cvebase.io