Medium severity · published Oct 27, 2020
CVE-2019-8834
A configuration issue was addressed with additional restrictions
4.3
CVSS
1.2%
EPSS
No
On KEV
Description
A configuration issue was addressed with additional restrictions. This issue is fixed in tvOS 13.3, watchOS 6.1.1, iCloud for Windows 10.9, macOS Catalina 10.15.2, Security Update 2019-002 Mojave, and Security Update 2019-007 High Sierra, iOS 13.3 and iPadOS 13.3, iTunes 12.10.3 for Windows, iCloud for Windows 7.16. An attacker in a privileged network position may be able to bypass HSTS for a limited number of specific top-level domains previously not in the HSTS preload list.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 13.3 · source: NVD
IC
Icloud · Apple
before 7.16; 10.0 before 10.9 · source: NVD
IT
Itunes · Apple
before 12.10.3 · source: NVD
MO
Mac OS X · Apple
before 10.15.2 · source: NVD
TV
Tvos · Apple
before 13.3 · source: NVD
WA
Watchos · Apple
before 6.1.1 · source: NVD
Affected product
IO
iOS
Apple
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