High severity · published Oct 28, 2021
CVE-2021-30818
A type confusion issue was addressed with improved state handling
8.8
CVSS
1.6%
EPSS
No
On KEV
Description
A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, iOS 15 and iPadOS 15, Safari 15, watchOS 8. 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)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 14.8 · source: NVD
MA
macOS · Apple
before 12.0.1 · source: NVD
SA
Safari · Apple
before 15.0 · source: NVD
TV
Tvos · Apple
before 15.0 · source: NVD
WA
Watchos · Apple
before 8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30818
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30818
Mailing List
http://www.openwall.com/lists/oss-security/2021/12/20/6
Release Notes
https://support.apple.com/en-us/HT212807
Release Notes
https://support.apple.com/en-us/HT212814
Release Notes
https://support.apple.com/en-us/HT212815
Release Notes
https://support.apple.com/en-us/HT212816
Release Notes
https://support.apple.com/en-us/HT212819
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