PT-2021-4219 · Apple · Ipados+4

0Xalsr · Published 2021-01-26 · Updated 2025-10-23 · CVE-2021-1782

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions macOS versions prior to 11.2 Security Update versions prior to 2021-001 Catalina Security Update versions prior to 2021-001 Mojave watchOS versions prior to 7.3 tvOS versions prior to 14.4 iOS versions prior to 14.4 iPadOS versions prior to 14.4

Description The issue is related to a race condition with improper synchronization, allowing a malicious application to potentially elevate privileges. Apple is aware of a report that this issue may have been actively exploited.

Recommendations For macOS versions prior to 11.2, update to macOS Big Sur 11.2. For Security Update versions prior to 2021-001 Catalina, apply Security Update 2021-001 Catalina. For Security Update versions prior to 2021-001 Mojave, apply Security Update 2021-001 Mojave. For watchOS versions prior to 7.3, update to watchOS 7.3. For tvOS versions prior to 14.4, update to tvOS 14.4. For iOS versions prior to 14.4, update to iOS 14.4. For iPadOS versions prior to 14.4, update to iPadOS 14.4.

Exploit

Fix

Improper Locking

Race Condition

Improper Privilege Management

Weakness Enumeration

CWE-667

CWE-362

CWE-269

Related Identifiers

BDU:2021-04823

CVE-2021-1782

Affected Products

Apple Macos

Ios

Ipados

Tvos

Watchos

References · 28

• 🔥 https://github.com/synacktiv/CVE-2021-1782 · Exploit
• https://bdu.fstec.ru/vul/2021-04823 · Security Note
• https://support.apple.com/en-us/HT212147 · Vendor Advisory
• https://support.apple.com/en-us/HT212146 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1782 · Security Note
• https://support.apple.com/en-us/HT212148 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1782 · Vendor Advisory
• https://support.apple.com/en-us/HT212149 · Vendor Advisory
• https://github.com/ModernPwner/cicuta_virosa · Note
• https://support.apple.com/en-us/103124 · Note
• https://t.me/cvenotify/109637 · Telegram Post
• https://cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1782 · Note
• https://twitter.com/minacrissDev_/status/1934829596593082860 · Twitter Post
• https://t.me/cybersecuritytechnologies/2815 · Telegram Post
• https://t.me/cveNotify/140056 · Telegram Post