CVE-2021-1883

MEDIUM

iPadOS < 14.5 - Out-of-bounds Write via Malicious Server Messages

Title source: llm
STIX 2.1

Description

This issue was addressed with improved checks. This issue is fixed in Security Update 2021-004 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, Security Update 2021-003 Catalina, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted server messages may lead to heap corruption.

References (6)

Core 6
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/HT212530
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212325
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212531

Scores

CVSS v3 5.5
EPSS 0.0200
EPSS Percentile 78.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Details

CWE
CWE-787
Status published
Products (9)
apple/ipados < 14.5
apple/iphone_os < 14.5
apple/mac_os_x 10.14.6 (19 CPE variants)
apple/mac_os_x 10.15.6 (2 CPE variants)
apple/mac_os_x 10.15.7 (8 CPE variants)
apple/mac_os_x 10.14 - 10.14.5
apple/macos 11.0 - 11.3
apple/tvos < 14.5
apple/watchos < 7.4
Published Sep 08, 2021
Tracked Since Feb 18, 2026