CVE-2019-8723

Name: CVE-2019-8723
Creator: NVD / NIST
Published: 2019-12-18T18:15:36.943+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.88%

Last modified Jun 17, 2026

CVE-2019-8723 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Multiple issues in ld64 in the Xcode toolchains were addressed by updating to version ld64-507.4. This issue is fixed in Xcode 11.0. EPSS estimates a 1.88% chance of exploitation in the next 30 days.

Description

Multiple issues in ld64 in the Xcode toolchains were addressed by updating to version ld64-507.4. This issue is fixed in Xcode 11.0. Compiling code without proper input validation could lead to arbitrary code execution with user privilege.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.88%

76.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Apple	Xcode	< 11.0

References

https://support.apple.com/HT210609Vendor Advisory
https://support.apple.com/HT210609Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2019-8723?

How severe is CVE-2019-8723?

CVE-2019-8723 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.88% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8723?

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-2019-8723?

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

Scan your code now

Source: NVD / NIST