CVE-2021-1789
8.8 · HIGH Actively ExploitedOverview
CVE-2021-1789 is a high-severity vulnerability affecting apple ipados. It was published on April 2, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from apple. Update ipados to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| apple | ipados | >= 0, < 14.4 | Affected |
| apple | iphone_os | >= 0, < 14.4 | Affected |
| apple | mac_os_x | >= 10.14, < 10.14.6 | Affected |
| apple | macos | >= 11.0, < 11.2 | Affected |
| apple | tvos | >= 0, < 14.4 | Affected |
| apple | watchos | >= 0, < 7.3 | Affected |
| webkitgtk | webkitgtk | >= 0, < 2.30.6 | Affected |
References
Frequently Asked Questions
What is CVE-2021-1789?
CVE-2021-1789 is a high-severity vulnerability affecting apple ipados. It was published on April 2, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2021-1789?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-1789?
Check the references section for vendor advisories and patches from apple. Update ipados to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-1789?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-1789 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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