CVE-2021-1788
high-risk
Published 2021-04-02
A use after free issue was addressed with improved memory management. 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.
Do I need to act?
-
0.41% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10
High
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (14)
Release Notes
https://support.apple.com/en-us/HT212146
Release Notes
https://support.apple.com/en-us/HT212147
Release Notes
https://support.apple.com/en-us/HT212148
Release Notes
https://support.apple.com/en-us/HT212149
Release Notes
https://support.apple.com/en-us/HT212152
Third Party Advisory
https://www.debian.org/security/2021/dsa-4923
Release Notes
https://support.apple.com/en-us/HT212146
Release Notes
https://support.apple.com/en-us/HT212147
Release Notes
https://support.apple.com/en-us/HT212148
Release Notes
https://support.apple.com/en-us/HT212149
Release Notes
https://support.apple.com/en-us/HT212152
Third Party Advisory
https://www.debian.org/security/2021/dsa-4923
53
/ 100
high-risk
Severity
30/34 · Critical
Exploitability
2/34 · Minimal
Exposure
21/34 · High