High severity · published Apr 2, 2021
CVE-2021-1761
This issue was addressed with improved checks
7.5
CVSS
2.1%
EPSS
No
On KEV
Description
This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause a denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 14.4 · source: NVD
MA
macOS · Apple
11.0.1 before 11.2 · source: NVD
IO
Ipad OS · Apple
before 14.4 · source: NVD
MO
Mac OS X · Apple
10.14 before 10.14.6; 10.15 before 10.15.7; 10.14.6; 10.14.6; 10.14.6; 10.14.6; +11 more · source: NVD
TV
Tvos · Apple
before 14.4 · source: NVD
WA
Watchos · Apple
before 7.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-1761
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-1761
Vendor Advisory
https://support.apple.com/en-us/HT212146
Vendor Advisory
https://support.apple.com/en-us/HT212147
Vendor Advisory
https://support.apple.com/en-us/HT212148
Vendor Advisory
https://support.apple.com/en-us/HT212149
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