VULNERABILITY INTELLIGENCE
CVE-2021-1789
CVSS score8.8 HIGH
EPSS probability13.98%
CISA KEVKnown exploited vulnerability
Published2021-04-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Known Exploited Vulnerability
Apple Multiple Products Type Confusion Vulnerability
Vendor / product: Apple / Multiple Products
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.
Weakness classification
- nvd@nist.gov: CWE-843
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-843
Primary references
- product-security@apple.com — Broken Link, Mailing List
- product-security@apple.com — Broken Link, Mailing List
- product-security@apple.com — Third Party Advisory
- product-security@apple.com — Release Notes, Vendor Advisory
- product-security@apple.com — Release Notes, Vendor Advisory
- product-security@apple.com — Release Notes, Vendor Advisory
- product-security@apple.com — Release Notes, Vendor Advisory
- product-security@apple.com — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Mailing List
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Mailing List
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory