CVE-2021-1821

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CVSS 3.1

6.5 medium

EPSS

<1%p49

Published

Oct 28, 2021 (Oct 28, 2021)

Modified

Jun 17, 2026

Description

A logic issue was addressed with improved state management. This issue is fixed in watchOS 7.6, macOS Big Sur 11.5. Visiting a maliciously crafted webpage may lead to a system denial of service.

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

NVD CVE.org GitHub PoCs EPSS (0.7%)

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