CVE-2020-27946: Medium severity tvos vulnerability

Published Dec 14, 2020
·
Updated

An information disclosure issue was addressed with improved state management. This issue is fixed in watchOS 7.2, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, iOS 14.3 and iPadOS 14.3, tvOS 14.3. Processing a maliciously crafted font may result in the disclosure of process memory.

Other sources

FontParser. An information disclosure issue was addressed with improved state management.

Credit

Mateusz Jurczyk(Google Project Zero)

Affected Software

29 affected componentsFixes available
Apple tvOS<14.3
14.3
Apple macOS Big Sur<11.1
11.1
Apple Catalina
Apple Mojave
Apple WatchOS<7.2
7.2
Apple iOS<14.3
14.3
Apple iPadOS<14.3
14.3
Apple iPadOS<14.3
Apple iPhone OS<14.3
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-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-supplemental_update
Apple macOS>=11.0<11.1.0
Apple tvOS<14.3
Apple WatchOS<7.2

Event History

Apr 2, 2021
CVE Published
via MITRE·05:38 PM
Data Sourced
via MITRE·05:38 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-2020-27946?

CVE-2020-27946 is a vulnerability in FontParser that allows for information disclosure.

2

How does CVE-2020-27946 impact Apple iOS?

CVE-2020-27946 affects Apple iOS versions up to and exclusive of 14.3.

3

How does CVE-2020-27946 impact Apple iPadOS?

CVE-2020-27946 affects Apple iPadOS versions up to and exclusive of 14.3.

4

How does CVE-2020-27946 impact Apple tvOS?

CVE-2020-27946 affects Apple tvOS versions up to and exclusive of 14.3.

5

How does CVE-2020-27946 impact Apple macOS Big Sur?

CVE-2020-27946 affects Apple macOS Big Sur versions up to and exclusive of 11.1.

6

How does CVE-2020-27946 impact Apple Catalina?

CVE-2020-27946 has no specified impact on Apple Catalina.

7

How does CVE-2020-27946 impact Apple Mojave?

CVE-2020-27946 has no specified impact on Apple Mojave.

8

How does CVE-2020-27946 impact Apple watchOS?

CVE-2020-27946 affects Apple watchOS versions up to and exclusive of 7.2.

9

How can I fix CVE-2020-27946?

To fix CVE-2020-27946, apply the recommended updates provided by Apple.

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