CVE-2026-20664

MediumCVSS 4.3

Published: 25/03/2026(UTC)Updated: 15/07/2026(UTC)Translated: 16/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.72%

50th percentile - higher than 50% of all known CVEs

Summary

A vulnerability in WebKit may lead to an unexpected process crash when processing maliciously crafted web content. The issue was fixed by improving memory handling in Safari 26.4, iOS 26.4, iPadOS 26.4, macOS Tahoe 26.4, and visionOS 26.4.

Risk Assessment

An attacker could cause an unexpected process crash, potentially disrupting browser or other WebKit-based applications, affecting user productivity.

Recommendation

Immediately update systems to Safari 26.4, iOS 26.4, iPadOS 26.4, macOS Tahoe 26.4, or visionOS 26.4, depending on the platform in use.

Original NVD description (English source)

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may lead to an unexpected process crash.