CVE-2019-8723 — Multiple issues in ld64 in the Xcode toolchains were addressed by updating to version ld64-507.4

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HIGH

Multiple issues in ld64 in the Xcode toolchains were addressed by updating to version ld64-507.4

Published Dec 18, 2019

8.8

HIGH

CVSS 3.1

EPSS 1.88%

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.

Affected products

Vendor Apple Product Xcode Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <Xcode 11.0

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Apple

Xcode

n/a

Version	Status	Constraints
unspecified	affected	<Xcode 11.0

Remediation

No remediation recorded yet.

Metrics

1.88% 0.01881

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01881

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Table of values (13 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.88% (0.01881)	78.70th	v5 (v2026.06.15)
Jun 15, 2026	1.88% (0.01881)	76.67th	v5 (v2026.06.15)
Jul 20, 2024	0.41% (0.00413)	74.19th	v3 (v2023.03.01)
Feb 21, 2024	0.41% (0.00413)	73.35th	v3 (v2023.03.01)
Jan 27, 2024	0.41% (0.00413)	71.34th	v3 (v2023.03.01)
Mar 7, 2023	0.35% (0.00349)	67.30th	v3 (v2023.03.01)
Mar 6, 2023	1.09% (0.01086)	53.47th	v2 (v2022.01.01)
Sep 17, 2022	1.09% (0.01086)	51.85th	v2 (v2022.01.01)
Apr 1, 2022	1.09% (0.01086)	49.83th	v2 (v2022.01.01)
Feb 4, 2022	13.05% (0.13054)	90.47th	v2 (v2022.01.01)
Feb 3, 2022	0.48% (0.00480)	10.98th	v1
Jan 6, 2022	0.48% (0.00480)	10.69th	v1
Apr 14, 2021	0.11% (0.00107)	0.00th	v1

Weaknesses (1)

CWE-20

Improper Input Validation

References (1)

https://support.apple.com/HT210609
x_refsource_MISCVendor Advisory

Link	Providers	Tags
https://support.apple.com/HT210609		x_refsource_MISCVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner apple

Published Dec 18, 2019

Updated Aug 4, 2024

Reserved Feb 18, 2019

Link CVE-2019-8723

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2019-8723

Red Hat

Severity n/a

Public date n/a

Links CVE-2019-8723