Is CVE-2019-8779 actively exploited?

No active exploitation of CVE-2019-8779 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-8779 be exploited remotely?

Yes. CVE-2019-8779 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-8779?

CVE-2019-8779 has a CVSS score of 10.0 (CRITICAL).

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CRITICAL

CVE-2019-8779

CWE-668Published: December 18, 2019· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

A logic issue applied the incorrect restrictions. This issue was addressed by updating the logic to apply the correct restrictions. This issue is fixed in iOS 13.1.1 and iPadOS 13.1.1. Third party app extensions may not receive the correct sandbox restrictions.

NVD Source

Technical Analysis

CVE-2019-8779 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 10.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.