CVE-2021-1834: Critical severity apple macos vulnerability

Published Apr 26, 2021
·
Updated

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to execute arbitrary code with kernel privileges.

Other sources

Intel Graphics Driver. An out-of-bounds write issue was addressed with improved bounds checking.

Credit

ABC Research s.r.o.(Trend Micro Zero Day Initiative), ABC Research s.r.o.(Trend Micro Zero Day Initiative), Jack Dates(RET2 Systems Inc), ABC Research s.r.o.(Trend Micro Zero Day Initiative)

Affected Software

45 affected componentsFixes available
Apple macOS Big Sur<11.3
11.3
Apple Catalina
Apple Mojave
Apple iOS and macOS=10.14
Apple iOS and macOS=10.14.0
Apple iOS and macOS=10.14.1
Apple iOS and macOS=10.14.2
Apple iOS and macOS=10.14.3
Apple iOS and macOS=10.14.4
Apple iOS and macOS=10.14.4-beta4
Apple iOS and macOS=10.14.5
Apple iOS and macOS=10.14.6
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_2019-004
Apple iOS and macOS=10.14.6-security_update_2019-005
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-security_update_2021-001
Apple iOS and macOS=10.14.6-security_update_2021-002
Apple iOS and macOS=10.15
Apple iOS and macOS=10.15.1
Apple iOS and macOS=10.15.2
Apple iOS and macOS=10.15.3
Apple iOS and macOS=10.15.4
Apple iOS and macOS=10.15.5
Apple iOS and macOS=10.15.6
Apple iOS and macOS=10.15.6
Apple iOS and macOS=10.15.6-supplemental_update
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2020-005
Apple iOS and macOS=10.15.7-security_update_2020-007
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple macOS>=11.0<11.3

Event History

Sep 8, 2021
CVE Published
via MITRE·02:43 PM
Data Sourced
via MITRE·02:43 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

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-2021-1834?

CVE-2021-1834 is an out-of-bounds write vulnerability in Intel Graphics Driver that has been addressed with improved bounds checking.

2

Which software products are affected by CVE-2021-1834?

CVE-2021-1834 affects Apple Catalina, Apple Mojave, and Apple macOS Big Sur versions up to and including 11.3.

3

How severe is CVE-2021-1834?

The severity of CVE-2021-1834 is not specified.

4

How can I fix CVE-2021-1834?

To fix CVE-2021-1834, update to the recommended version of the affected software provided by Apple.

5

Where can I find more information about CVE-2021-1834?

You can find more information about CVE-2021-1834 on the following Apple support pages: [link1](https://support.apple.com/en-us/HT212326), [link2](https://support.apple.com/en-us/HT212327), [link3](https://support.apple.com/en-us/HT212325).

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