Medium severity · published Dec 8, 2020
CVE-2020-9849
An information disclosure issue was addressed with improved state management
6.5
CVSS
2.1%
EPSS
No
On KEV
Description
An information disclosure issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iTunes for Windows 12.10.9, iCloud for Windows 11.5, tvOS 14.0. A remote attacker may be able to leak memory.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
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 14.0 · source: NVD
MA
macOS · Apple
before 11.0.1 · source: NVD
IC
Icloud · Apple
before 11.5 · source: NVD
IT
Itunes · Apple
12.0.0 before 12.10.9 · source: NVD
TV
Tvos · Apple
before 14.0 · source: NVD
WA
Watchos · Apple
before 7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-9849
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-9849
Mailing List
http://seclists.org/fulldisclosure/2020/Dec/32
lists.apache.org
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
Release Notes
https://support.apple.com/en-us/HT211843
Release Notes
https://support.apple.com/en-us/HT211844
Release Notes
https://support.apple.com/en-us/HT211850
Release Notes
https://support.apple.com/en-us/HT211931
More from iOS
10.0
CVE-2025-43300
Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2025-24085
Apple Multiple Products Use-After-Free Vulnerability
9.8
CVE-2025-31200
Apple Multiple Products Memory Corruption Vulnerability
9.8
CVE-2025-31201
Apple Multiple Products Arbitrary Read and Write Vulnerability