CVE-2021-1789

HIGH KEV

iPadOS < 14.4 - Remote Code Execution via Type Confusion

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2021-1789 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added May 4, 2022.

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.

References (9)

Core 9
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212147
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212146
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212148
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212149
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212152
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202104-03

Scores

CVSS v3 8.8
EPSS 0.0024
EPSS Percentile 48.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2022-05-04
VulnCheck KEV 2021-10-11
InTheWild.io 2021-08-01
ENISA EUVD EUVD-2021-7253
CWE
CWE-843
Status published
Products (11)
apple/ipados < 14.4
apple/iphone_os < 14.4
apple/mac_os_x 10.14.6 (14 CPE variants)
apple/mac_os_x 10.15.7 (2 CPE variants)
apple/mac_os_x 10.14 - 10.14.6
apple/macos 11.0 - 11.2
apple/tvos < 14.4
apple/watchos < 7.3
fedoraproject/fedora 32
fedoraproject/fedora 33
... and 1 more
Published Apr 02, 2021
KEV Added May 04, 2022
Tracked Since Feb 18, 2026