CVE-2021-1742: High severity tvos vulnerability

Published Jan 26, 2021
·
Updated

ImageIO. This issue was addressed with improved checks.

Other sources

This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. Processing a maliciously crafted image may lead to arbitrary code execution.

Credit

Xingwei Lin(Ant Security Light), Jeonghoon Shin@@singi21a(THEORI), Mickey Jin & Qi Sun(Trend Micro working with Trend Micro)

Affected Software

31 affected componentsFixes available
Apple tvOS<14.4
14.4
Apple macOS Big Sur<11.2
11.2
Apple Catalina
Apple Mojave
Apple WatchOS<7.3
7.3
Apple iOS<14.4
14.4
Apple iPadOS<14.4
14.4
Apple iPadOS<14.4
Apple iPhone OS<14.4
Apple iOS and macOS>=10.14<10.14.6
Apple iOS and macOS>=10.15<10.15.7
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-001
Apple iOS and macOS=10.14.6-security_update_2019-002
Apple iOS and macOS=10.14.6-security_update_2019-006
Apple iOS and macOS=10.14.6-security_update_2019-007
Apple iOS and macOS=10.14.6-security_update_2020-001
Apple iOS and macOS=10.14.6-security_update_2020-002
Apple iOS and macOS=10.14.6-security_update_2020-003
Apple iOS and macOS=10.14.6-security_update_2020-004
Apple iOS and macOS=10.14.6-security_update_2020-005
Apple iOS and macOS=10.14.6-security_update_2020-006
Apple iOS and macOS=10.14.6-security_update_2020-007
Apple iOS and macOS=10.14.6-supplemental_update
Apple iOS and macOS=10.14.6-supplemental_update_2
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-supplemental_update
Apple macOS>=11.0<11.1.0
Apple tvOS<14.4
Apple WatchOS<7.3

Event History

Apr 2, 2021
CVE Published
via MITRE·05:48 PM
Data Sourced
via MITRE·05:48 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is CVE-2021-1742?

CVE-2021-1742 is a vulnerability in ImageIO that has been addressed with improved checks.

2

Which operating systems are affected by CVE-2021-1742?

CVE-2021-1742 affects macOS Big Sur 11.2, Catalina, Mojave, watchOS up to 7.3, iOS up to 14.4, iPadOS up to 14.4, and tvOS up to 14.4.

3

How can I fix CVE-2021-1742?

To fix CVE-2021-1742, make sure you have the latest security updates and patches installed for your operating system.

4

Where can I find more information about CVE-2021-1742?

You can find more information about CVE-2021-1742 on the Apple support website.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203