High severity · published Sep 8, 2021
CVE-2021-30799
Multiple memory corruption issues were addressed with improved memory handling
8.8
CVSS
2.3%
EPSS
No
On KEV
Description
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. 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)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 14.7 · source: NVD
MA
macOS · Apple
11.0 before 11.5 · source: NVD
MO
Mac OS X · Apple
10.14 through 10.14.6; 10.15 before 10.15.7; 10.14.6; 10.14.6; 10.14.6; 10.14.6; +23 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30799
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30799
Vendor Advisory
https://support.apple.com/en-us/HT212600
Vendor Advisory
https://support.apple.com/en-us/HT212601
Vendor Advisory
https://support.apple.com/en-us/HT212602
Vendor Advisory
https://support.apple.com/en-us/HT212603
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