CVE-2021-1855

MediumCVSS 6.5/10Last 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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected software

No affected versions have been published.

Timeline

Published
Sep 8, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-1855: Medium severity, CVSS 6.5 | Vulnix