CVE-2021-1855

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CVSS 3.1

6.5 medium

EPSS

<1%p54

Published

Sep 8, 2021 (Sep 8, 2021)

Modified

Jun 17, 2026

Description

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3. A malicious website may be able to force unnecessary network connections to fetch its favicon.

Vendors: apple
Products: macos
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.8%)

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