CVE-2026-20636 Memory corruption in Safari

What is CVE-2026-20636?

CVE-2026-20636 is a medium-severity memory corruption vulnerability in Apple Ipados, published on 11 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, 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.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2026-20636?

3 open source packages ship an affected version, including java, java-min and jre. It affects 5 products.

Products include Apple Ipados, Apple Iphone Os, Apple Macos, Apple Safari, Apple Visionos.

How do I fix CVE-2026-20636?

Upgrade java to a fixed version for your release line: 1.8.0 or 8.0.491.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-20636 being exploited?

There is no known exploitation of CVE-2026-20636 in the wild and no public exploit code.

Other vulnerabilities in Apple Ipados

• CVE-2025-43300 Apple iOS, iPadOS, and macOS Out-of-Bounds Write Exploited Critical 10.0
• CVE-2025-24201 Apple Multiple Products WebKit Out-of-Bounds Write Exploited Critical 10.0
• CVE-2025-24085 Apple Multiple Products Use-After-Free Exploited Critical 10.0
• CVE-2025-31200 Apple Multiple Products Memory Corruption Exploited Critical 9.8
• CVE-2025-31201 Apple Multiple Products Arbitrary Read and Write Exploited Critical 9.8

All Apple Ipados vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-java-2026-20636, BIT-java-min-2026-20636, BIT-jre-2026-20636, DEBIAN-CVE-2026-20636, GHSA-wx45-vx6h-76cq, MINI-v5xq-78xj-crx5 and 1 more.