CVE-2021-1857

MEDIUM

iCloud < 12.3 - Information Disclosure via Improper Memory Initialization

Title source: llm
STIX 2.1

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.

References (8)

Core 8
Core References
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212317
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212323
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212324
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212325
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212326
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212327
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212319
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212321

Scores

CVSS v3 6.5
EPSS 0.0118
EPSS Percentile 63.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Details

CWE
CWE-665
Status published
Products (23)
apple/icloud < 12.3
apple/ipados < 14.5
apple/iphone_os < 14.5
apple/itunes < 12.11.3
apple/mac_os_x 10.14
apple/mac_os_x 10.14.0
apple/mac_os_x 10.14.1
apple/mac_os_x 10.14.2
apple/mac_os_x 10.14.3
apple/mac_os_x 10.14.4 (2 CPE variants)
... and 13 more
Published Sep 08, 2021
Tracked Since Feb 18, 2026