CVE-2021-1811

MEDIUM

6.5

CVSS Score

Published: September 8, 2021 at 02:55 PM UTC

Updated: June 17, 2026 at 03:32 AM UTC

7 products affected across 1 vendormacOSiPhone OSiPadOS

Using iOS and iPadOS by Apple?

Get instant alerts when new vulnerabilities affect iOS and iPadOS - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM6.5

Exploit prediction

EPSS 2%

Description

A logic issue was addressed with improved state management. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing a maliciously crafted font may result in the disclosure of process memory.

Affected

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

iCloud · Apple

95%

v < 12.3

Affected range stops below 12.3, so it looks safe — our inference, not a vendor statement

iPadOS · Apple

95%

v < 14.5

Affected range stops below 14.5, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

v < 14.5

Affected range stops below 14.5, so it looks safe — our inference, not a vendor statement

iTunes · Apple

95%

v < 12.11v < 12.11.3

Affected range stops below 12.11, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.11.3, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

Affected range stops below 11.3, 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

tvOS · Apple

95%

v < 14.5

Affected range stops below 14.5, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

v < 7.4

Affected range stops below 7.4, 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