Live › vulnerability › CVE-2021-1789
Go to dashboardA type confusion bug in WebKit-based Apple products lets crafted web content trigger memory corruption. An attacker who gets a victim to load a malicious page can run arbitrary code on the device.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Apple Multiple Products | vendor | – | – |
Unknown from the sources.
Update Apple devices and software to the vendor-fixed release per Apple's advisory; the sources do not give the version.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code execution.
This page as .md · .json · in your agent: get_signal("CVE-2021-1789")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.