CVE-2021-1855

medium

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.

References

https://support.apple.com/en-us/HT212325

https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-7319

Details

Source: Mitre, NVD

Published: 2021-09-08

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

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