CVE-2021-1789
CVSS v3
8.8
HIGH
EPSS Score
0.2 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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.
CISA Known Exploited Vulnerability
- Date Added
- 2022-05-04
- Patch Due Date
- 2022-05-25
- Ransomware Use
- Unknown
Technical details
- Published
- 2021-04-02
Frequently asked questions
What is CVE-2021-1789?
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.
Is CVE-2021-1789 actively exploited?
Yes. CVE-2021-1789 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-05-25.
What is the CVSS score for CVE-2021-1789?
CVE-2021-1789 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-1789 affecting your environment?
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