An out-of-bounds read was addressed with improved bounds checking.

published 2021-08-24 5y ago modified 2026-06-17 4mo ago also EUVD-2021-17822

cvss: 5.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

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.

Patch / fix

fixed in 2

Apple iOS and iPadOS 15.1
Apple macOS 8.1, 12.0, 15.1, 2021

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Exploit prediction

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

Apple iOS and iPadOS
Apple macOS

Classification

Weakness

CWE-125 Out-of-bounds Read

References

Sources

CVE List CVE-2021-30905
NVD CVE-2021-30905

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