CVE-2021-1781

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-02 · updated 2026-06-17

Description

A privacy issue existed in the handling of Contact cards. This was addressed with improved state management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A malicious application may be able to leak sensitive user information.

Affected products

Apple iPadOS: before 14.4 — fixed in 14.4
Apple Iphone Os: before 14.4 — fixed in 14.4
macOS: from 10.14 before 10.14.6; from 10.15 before 10.15.7; 10.14.6, 10.14.6-security_update_2019-004, 10.14.6-security_update_2019-005, 10.14.6-security_update_2019-006, 10.14.6-security_update_2019-007, 10.14.6-security_update_2020-001 (+10) — fixed in 10.14.6, 10.15.7
Apple macOS: from 11.0 before 11.2 — fixed in 11.2

How to fix

Upgrade to a fixed version: Apple iPadOS 14.4; Apple Iphone Os 14.4; macOS 10.14.6, 10.15.7; Apple macOS 11.2. Check the vendor advisory for mitigations.

References

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