CVE-2021-30749

HIGH

8.8

CVSS Score

Published: September 8, 2021 at 01:44 PM UTC

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

6 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity

HIGH8.8

Exploit prediction

EPSS 2%

Description

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing maliciously crafted web content 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 < 14.6

Affected range stops below 14.6, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

v < 14.6

Affected range stops below 14.6, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

v < 11.4v < 14.1v < 14.6v < 7.511.0 ≤ v < 11.4

Affected range stops below 11.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.5, so it looks safe — our inference, not a vendor statement

Safari · Apple

95%

v < 14.1.1

Affected range stops below 14.1.1, so it looks safe — our inference, not a vendor statement

tvOS · Apple

95%

v < 14.6

Affected range stops below 14.6, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

v < 7.5

Affected range stops below 7.5, 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