CVE-2020-9849

Name: CVE-2020-9849
Creator: NVD / NIST
Published: 2020-12-08T20:15:16.027+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 2.08%

Last modified Jun 17, 2026

CVE-2020-9849 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An information disclosure issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iTunes for Windows 12.10.9, iCloud for Windows 11.5, tvOS 14.0. EPSS estimates a 2.08% chance of exploitation in the next 30 days.

Description

An information disclosure issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iTunes for Windows 12.10.9, iCloud for Windows 11.5, tvOS 14.0. A remote attacker may be able to leak memory.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

2.08%

79.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Apple	Icloud	< 11.5
Apple	Itunes	>= 12.0.0, < 12.10.9
Apple	Ipados	< 14.0
Apple	Macos	< 11.0.1
Apple	Tvos	< 14.0
Apple	Watchos	< 7.0

References

http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://support.apple.com/en-us/HT211843Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211844Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211850Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211931Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211935Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211952Release Notes, Vendor Advisory
http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://support.apple.com/en-us/HT211843Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211844Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211850Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211931Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211935Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT211952Release Notes, Vendor Advisory

Timeline

Published: Dec 8, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9849?

How severe is CVE-2020-9849?

CVE-2020-9849 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.08% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9849?

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-2020-9849?

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

Scan your code now

Source: NVD / NIST