CVE-2019-8659

Name: CVE-2019-8659
Creator: NVD / NIST
Published: 2019-12-18T18:15:31.583+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.81%

Last modified Jun 17, 2026

CVE-2019-8659 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. This issue was addressed with improved checks. This issue is fixed in watchOS 5.3. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

Description

This issue was addressed with improved checks. This issue is fixed in watchOS 5.3. Users removed from an iMessage conversation may still be able to alter state.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.81%

52.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Watchos	< 5.3

References

https://support.apple.com/HT210353Vendor Advisory
https://support.apple.com/HT210353Vendor Advisory

Timeline

Published: Dec 18, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-8659?

This issue was addressed with improved checks. This issue is fixed in watchOS 5.3. Users removed from an iMessage conversation may still be able to alter state.

How severe is CVE-2019-8659?

CVE-2019-8659 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8659?

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-2019-8659?

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

Scan your code now

Source: NVD / NIST