HIGH

CVE-2019-8646

CVSS v3

7.5

HIGH

EPSS Score

11.0 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2019-8646 yet.

Full record on NVD

Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. A remote attacker may be able to leak memory.

Technical details

Published: 2019-12-18
Exploit-DB: EDB-47194

Frequently asked questions

What is CVE-2019-8646?

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. A remote attacker may be able to leak memory.

Is CVE-2019-8646 actively exploited?

Active exploitation of CVE-2019-8646 has not been confirmed. Its EPSS score was 11.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-8646?

CVE-2019-8646 has a CVSS v3 base score of 7.5 (HIGH severity).

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