How severe is CVE-2019-8724?

CVE-2019-8724 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-8724 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-8724?

CVE-2019-8724 affects Apple Xcode. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-8724?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-8724 published?

CVE-2019-8724 was published on 2019-12-18 and last updated on 2026-06-17.

CVE-2019-8724

CVE-2019-8724 is a high-severity vulnerability in Apple Xcode with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.3
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Apple Xcode
Published: 2019-12-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-8724?: 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.
How severe is CVE-2019-8724?: CVE-2019-8724 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-8724 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-8724?: CVE-2019-8724 affects Apple Xcode. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-8724?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-8724 published?: CVE-2019-8724 was published on 2019-12-18 and last updated on 2026-06-17.

References

https://support.apple.com/HT210609

Affected products (1)

cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*

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