CVE-2020-9916

Name: CVE-2020-9916
Creator: NVD / NIST
Published: 2020-10-16T17:15:17.137+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.36%

Last modified Jun 17, 2026

CVE-2020-9916 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A URL Unicode encoding issue was addressed with improved state management. This issue is fixed in iOS 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8, Safari 13.1.2, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. EPSS estimates a 1.36% chance of exploitation in the next 30 days.

Description

A URL Unicode encoding issue was addressed with improved state management. This issue is fixed in iOS 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8, Safari 13.1.2, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. A malicious attacker may be able to conceal the destination of a URL.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.36%

68.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Icloud	< 7.20
Apple	Icloud	>= 11.0, < 11.3
Apple	Itunes	< 12.10.8
Apple	Safari	< 13.1.2
Apple	Ipados	< 13.6
Apple	Iphone Os	< 13.6
Apple	Tvos	< 13.4.8
Apple	Watchos	< 6.2.8

References

https://support.apple.com/HT211288Release Notes, Vendor Advisory
https://support.apple.com/HT211290Release Notes, Vendor Advisory
https://support.apple.com/HT211291Release Notes, Vendor Advisory
https://support.apple.com/HT211292Release Notes, Vendor Advisory
https://support.apple.com/HT211293Release Notes, Vendor Advisory
https://support.apple.com/HT211294Release Notes, Vendor Advisory
https://support.apple.com/HT211295Release Notes, Vendor Advisory
https://support.apple.com/HT211288Release Notes, Vendor Advisory
https://support.apple.com/HT211290Release Notes, Vendor Advisory
https://support.apple.com/HT211291Release Notes, Vendor Advisory
https://support.apple.com/HT211292Release Notes, Vendor Advisory
https://support.apple.com/HT211293Release Notes, Vendor Advisory
https://support.apple.com/HT211294Release Notes, Vendor Advisory
https://support.apple.com/HT211295Release Notes, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2020-9916?

How severe is CVE-2020-9916?

CVE-2020-9916 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.36% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9916?

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-2020-9916?

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

Scan your code now

Source: NVD / NIST