High severity · published Sep 8, 2021
CVE-2021-30749
Multiple memory corruption issues were addressed with improved memory handling
8.8
CVSS
1.7%
EPSS
No
On KEV
Description
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. 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 14.6 · source: NVD
MA
macOS · Apple
11.0 before 11.4 · source: NVD
SA
Safari · Apple
before 14.1.1 · source: NVD
TV
Tvos · Apple
before 14.6 · source: NVD
WA
Watchos · Apple
before 7.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30749
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30749
Vendor Advisory
https://support.apple.com/en-us/HT212528
Vendor Advisory
https://support.apple.com/en-us/HT212529
Vendor Advisory
https://support.apple.com/en-us/HT212532
Vendor Advisory
https://support.apple.com/en-us/HT212533
Vendor Advisory
https://support.apple.com/en-us/HT212534
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