CVE-2026-20635

CWE-119 — Buffer OverflowCWE-120 — Classic Buffer Overflow16 documents9 sources
Severity
4.3MEDIUM
EPSS
0.0%
top 84.81%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
Apple IOS AND IpadosApple MacosApple Safari+5 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, tvOS 26.3, visionOS 26.3, watchOS 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:LExploitability: 2.8 | Impact: 1.4

Affected Packages15 packages

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

🔴Vulnerability Details

4
GHSA
GHSA-hjj6-wmh2-qhwj: The issue was addressed with improved memory handling↗2026-02-12
▶
CVEList
CVE-2026-20635: The issue was addressed with improved memory handling↗2026-02-11
▶
OSV
CVE-2026-20635: The issue was addressed with improved memory handling↗2026-02-11
▶
OSV
CVE-2026-20635: The issue was addressed with improved memory handling↗2026-02-11
▶

📋Vendor Advisories

9
Red Hat
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash↗2026-03-18
▶
Apple
CVE-2026-20635: watchOS 26.3↗2026-02-11
▶
Apple
CVE-2026-20635: iOS 26.3 and iPadOS 26.3↗2026-02-11
▶
Apple
CVE-2026-20635: macOS Tahoe 26.3↗2026-02-11
▶
Apple
CVE-2026-20635: Safari 26.3↗2026-02-11
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-20635 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶

💬Community

1
Bugzilla
CVE-2026-20635 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash [fedora-all]↗2026-03-19
▶
CVE-2026-20635 (MEDIUM CVSS 4.3) | The issue was addressed with improv | cvebase.io