CVE-2020-9889

Name: CVE-2020-9889
Creator: NVD / NIST
Published: 2020-10-16T17:15:16.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.68%

Last modified Jun 17, 2026

CVE-2020-9889 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8. EPSS estimates a 1.68% chance of exploitation in the next 30 days.

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8. Processing a maliciously crafted audio file 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

1.68%

74.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Apple	Ipados	< 13.6
Apple	Iphone Os	< 13.6
Apple	Mac Os X	>= 10.13, < 10.13.6
Apple	Mac Os X	>= 10.14, < 10.14.6
Apple	Mac Os X	>= 10.15, < 10.15.6
Apple	Mac Os X	10.13.6
Apple	Mac Os X	10.14.6
Apple	Tvos	< 13.4.8
Apple	Watchos	< 6.2.8

References

https://support.apple.com/HT211288Vendor Advisory
https://support.apple.com/HT211289Vendor Advisory
https://support.apple.com/HT211290Vendor Advisory
https://support.apple.com/HT211291Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1391/Third Party Advisory, VDB Entry
https://support.apple.com/HT211288Vendor Advisory
https://support.apple.com/HT211289Vendor Advisory
https://support.apple.com/HT211290Vendor Advisory
https://support.apple.com/HT211291Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1391/Third Party Advisory, VDB Entry

Timeline

Published: Oct 16, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9889?

How severe is CVE-2020-9889?

CVE-2020-9889 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.68% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9889?

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-2020-9889?

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

Scan your code now

Source: NVD / NIST