Medium severity · published Sep 8, 2021
CVE-2021-30796
A logic issue was addressed with improved validation
6.5
CVSS
1.6%
EPSS
No
On KEV
Description
A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing a maliciously crafted image may lead to a denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
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 14.7 · source: vendor, NVD
MA
macOS · Apple
before 11.5; before 2021 · source: vendor, NVD
SU
Security Update - Catalina · Apple
before 2021 · source: vendor
MO
Mac OS X · Apple
10.14; 10.14.0; 10.14.1; 10.14.2; 10.14.3; 10.14.4; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30796
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30796
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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