CVE-2021-1811

MEDIUM

iCloud < 12.3 - Memory Disclosure via Malicious Font Processing

Title source: llm
STIX 2.1

Description

A logic issue was addressed with improved state management. 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 a maliciously crafted font may result in the disclosure of process memory.

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 0.0167
EPSS Percentile 74.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Details

Status published
Products (11)
apple/icloud < 12.3
apple/ipados < 14.5
apple/iphone_os < 14.5
apple/itunes < 12.11.3
apple/mac_os_x 10.14.6 (18 CPE variants)
apple/mac_os_x 10.15.6 (2 CPE variants)
apple/mac_os_x 10.15.7 (7 CPE variants)
apple/mac_os_x 10.14 - 10.14.5
apple/macos 11.0 - 11.3
apple/tvos < 14.5
... and 1 more
Published Sep 08, 2021
Tracked Since Feb 18, 2026