CVE-2021-1789 vulnerability in Apple and Other Products
Published on April 2, 2021
Known Exploited Vulnerability
This Apple Multiple Products Type Confusion Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A type confusion issue affecting multiple Apple products allows processing of maliciously crafted web content, leading to arbitrary code execution.
The following remediation steps are recommended / required by May 25, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2021-1789 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is an Object Type Confusion Vulnerability?
The program allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.
CVE-2021-1789 has been classified to as an Object Type Confusion vulnerability or weakness.
Products Associated with CVE-2021-1789
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-1789 are published in these products:
Affected Versions
Apple iOS and iPadOS:- Version unspecified and below 14.4 is affected.
- Version unspecified and below 11.2 is affected.
- Version unspecified and below 7.3 is affected.
- Version unspecified and below 14.4 is affected.
- Version unspecified and below 14.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.