CVE-2021-30760

HIGH

7.8

CVSS Score

Published: September 8, 2021 at 01:46 PM UTC

Updated: June 17, 2026 at 03:50 AM UTC

5 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity

HIGH7.8

Exploit prediction

EPSS 1%

Description

An integer overflow was addressed through improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-005 Mojave, Security Update 2021-004 Catalina. Processing a maliciously crafted font file may lead to arbitrary code execution.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS · Apple

95%

v < 14.7

Affected range stops below 14.7, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

v < 14.7

Affected range stops below 14.7, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

Affected range stops below 11.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 2021, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.6, so it looks safe — our inference, not a vendor statement

tvOS · Apple

95%

v < 14.7

Affected range stops below 14.7, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

v < 7.6

Affected range stops below 7.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references