CVE-2021-30847

Name: CVE-2021-30847
Creator: NVD / NIST
Published: 2021-10-19T14:15:09.663+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 2.89%

Last modified Jun 17, 2026

CVE-2021-30847 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. This issue was addressed with improved checks. This issue is fixed in watchOS 8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, iTunes 12.12 for Windows. EPSS estimates a 2.89% chance of exploitation in the next 30 days.

Description

This issue was addressed with improved checks. This issue is fixed in watchOS 8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, iTunes 12.12 for Windows. Processing a maliciously crafted image may lead to 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

2.89%

85.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Itunes	< 12.12
Apple	Ipados	< 15.0
Apple	Iphone Os	< 15.0
Apple	Mac Os X	>= 10.15, <= 10.15.6
Apple	Mac Os X	10.15.7
Apple	Macos	>= 11.0, < 11.6
Apple	Tvos	< 15.0
Apple	Watchos	< 8.0

References

http://seclists.org/fulldisclosure/2021/Oct/61Mailing List, Release Notes, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Oct/62Mailing List, Release Notes, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Oct/63Mailing List, Release Notes, Third Party Advisory
https://support.apple.com/en-us/HT212804Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212805Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212814Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212815Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212817Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212819Release Notes, Vendor Advisory
https://support.apple.com/kb/HT212807Release Notes
https://support.apple.com/kb/HT212953Vendor Advisory
http://seclists.org/fulldisclosure/2021/Oct/61Mailing List, Release Notes, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Oct/62Mailing List, Release Notes, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Oct/63Mailing List, Release Notes, Third Party Advisory
https://support.apple.com/en-us/HT212804Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212805Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212814Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212815Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212817Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212819Release Notes, Vendor Advisory
https://support.apple.com/kb/HT212807Release Notes
https://support.apple.com/kb/HT212953Vendor Advisory

Timeline

Published: Oct 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30847?

How severe is CVE-2021-30847?

CVE-2021-30847 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.89% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30847?

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-2021-30847?

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

Scan your code now

Source: NVD / NIST