CVE-2021-30834

Name: CVE-2021-30834
Creator: NVD / NIST
Published: 2021-10-28T19:15:09.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.05%

Last modified Jun 17, 2026

CVE-2021-30834 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A logic issue was addressed with improved state management. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, iOS 15 and iPadOS 15, watchOS 8, Security Update 2021-007 Catalina. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

Description

A logic issue was addressed with improved state management. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, iOS 15 and iPadOS 15, watchOS 8, Security Update 2021-007 Catalina. Processing a malicious audio file may result in unexpected application termination or arbitrary code execution.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.05%

59.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Ipados	< 14.8
Apple	Iphone Os	< 14.8
Apple	Mac Os X	< 10.15.7
Apple	Mac Os X	10.15.7
Apple	Macos	>= 11.0, < 11.6
Apple	Tvos	< 15.0
Apple	Watchos	< 8.0

References

https://support.apple.com/en-us/HT212807Vendor Advisory
https://support.apple.com/en-us/HT212814Vendor Advisory
https://support.apple.com/en-us/HT212815Vendor Advisory
https://support.apple.com/en-us/HT212819Vendor Advisory
https://support.apple.com/en-us/HT212871Vendor Advisory
https://support.apple.com/kb/HT212804Vendor Advisory
https://support.apple.com/en-us/HT212807Vendor Advisory
https://support.apple.com/en-us/HT212814Vendor Advisory
https://support.apple.com/en-us/HT212815Vendor Advisory
https://support.apple.com/en-us/HT212819Vendor Advisory
https://support.apple.com/en-us/HT212871Vendor Advisory
https://support.apple.com/kb/HT212804Vendor Advisory

Timeline

Published: Oct 28, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30834?

How severe is CVE-2021-30834?

CVE-2021-30834 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30834?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-30834?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST