High severity · published Apr 2, 2021
CVE-2021-1788
A use after free issue was addressed with improved memory management
8.8
CVSS
1.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 14.4 · source: NVD
MA
macOS · Apple
11.0 before 11.2 · source: NVD
DL
Debian Linux · Debian
10.0 · source: NVD
FE
Fedora · Fedoraproject
33 · source: NVD
MO
Mac OS X · Apple
10.14 before 10.14.6; 10.15 before 10.15.7; 10.14.6; 10.14.6; 10.14.6; 10.14.6; +12 more · source: NVD
SA
Safari · Apple
before 14.0.3 · source: NVD
TV
Tvos · Apple
before 14.4 · source: NVD
WA
Watchos · Apple
before 7.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-1788
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-1788
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/
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
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