CVE-2021-30786

HIGH

CVSS Score

Published: September 8, 2021 at 01:48 PM UTC

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

2 products affected across 1 vendormacOSiPhone OS

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Severity

HIGH7

Exploit prediction

EPSS 0.8%

Description

A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.

Affected

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

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%

v < 11.511.0 ≤ v < 11.5

Affected range stops below 11.5, 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

References (2)

x_refsource_MISCRelease NotesVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT212601

x_refsource_MISCRelease NotesVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT212602

CVSS

7HIGH[email protected]

Attack Vector: LOCAL
Complexity: HIGH
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-362

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