CVE-2021-30905

medium

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, tvOS 15.1, watchOS 8.1, Security Update 2021-007 Catalina. Processing a maliciously crafted file may disclose user information.

References

https://www.zerodayinitiative.com/advisories/ZDI-21-1368/

https://support.apple.com/kb/HT212872

https://support.apple.com/kb/HT212807

https://support.apple.com/en-us/HT212876

https://support.apple.com/en-us/HT212874

https://support.apple.com/en-us/HT212871

https://support.apple.com/en-us/HT212869

https://support.apple.com/en-us/HT212867

Details

Source: Mitre, NVD

Published: 2021-08-24

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Severity: Medium

EPSS

EPSS: 0.00321