PT-2021-13599 · Apple · Watchos+2

Georgi Valkov · Published 2021-07-21 · Updated 2021-11-02 · CVE-2021-1821

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: watchOS versions prior to 7.6 macOS Big Sur versions prior to 11.5

Description: A logic issue was addressed with improved state management. Visiting a maliciously crafted webpage may lead to a system denial of service.

Recommendations: For watchOS versions prior to 7.6, update to watchOS 7.6 to resolve the issue. For macOS Big Sur versions prior to 11.5, update to macOS Big Sur 11.5 to resolve the issue.

Fix

Related Identifiers

CVE-2021-1821

Affected Products

Apple Macos

Macos Big Sur

Watchos

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2021-1821 · Security Note
• https://osv.dev/vulnerability/CVE-2021-1821 · Vendor Advisory
• https://support.apple.com/en-us/HT212602 · Vendor Advisory
• https://support.apple.com/en-us/HT212605 · Vendor Advisory
• https://t.me/cibsecurity/31416 · Telegram Post
• https://support.apple.com/en-us/102849 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1821 · Note