High severity · published Sep 8, 2021
CVE-2021-30665
Apple Multiple Products WebKit Memory Corruption Vulnerability
In wildKEV
8.8
CVSS
3.7%
EPSS
Yes
On KEV
Description
A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS 7.4.1, iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
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)3.7% · higher than 90% of CVEs
Exploited in the wildYes
CISA KEVListed Nov 3, 2021
Federal remediation dueNov 17, 2021
Ransomware campaign useNot known
Affected products
Which versions
MA
macOS · Apple
before 11.3; before 14.5; before 7.4; before 12.5; before 14.6 · source: vendor, NVD
IO
iOS · Apple
before 14.5.1 · source: NVD
TV
Tvos · Apple
before 14.6 · source: NVD
WA
Watchos · Apple
before 7.4.1 · source: NVD
MP
Multiple Products · Apple
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30665
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30665
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://support.apple.com/en-us/HT212532
x_refsource_MISC
https://support.apple.com/en-us/HT212341
x_refsource_MISC
https://support.apple.com/en-us/HT212335
x_refsource_MISC
https://support.apple.com/en-us/HT212336
x_refsource_MISC
https://support.apple.com/en-us/HT212339
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