CVE-2019-8665

Name: CVE-2019-8665
Creator: NVD / NIST
Published: 2019-12-18T18:15:31.973+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.67%

Last modified Jun 17, 2026

CVE-2019-8665 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A denial of service issue was addressed with improved validation. This issue is fixed in iOS 12.4, watchOS 5.3. EPSS estimates a 1.67% chance of exploitation in the next 30 days.

Description

A denial of service issue was addressed with improved validation. This issue is fixed in iOS 12.4, watchOS 5.3. A remote attacker may cause an unexpected application termination.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.67%

73.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Apple	Iphone Os	< 12.4
Apple	Watchos	< 5.3

References

https://support.apple.com/HT210346Vendor Advisory
https://support.apple.com/HT210353Vendor Advisory
https://support.apple.com/HT210346Vendor 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-2019-8665?

A denial of service issue was addressed with improved validation. This issue is fixed in iOS 12.4, watchOS 5.3. A remote attacker may cause an unexpected application termination.

How severe is CVE-2019-8665?

CVE-2019-8665 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8665?

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-2019-8665?

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

Scan your code now

Source: NVD / NIST