Is CVE-2019-5066 actively exploited?

No active exploitation of CVE-2019-5066 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-5066 be exploited remotely?

Yes. CVE-2019-5066 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-5066?

CVE-2019-5066 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2019-5066

CRITICAL

CVE-2019-5066

CWE-416Published: September 18, 2019· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An exploitable use-after-free vulnerability exists in the way LZW-compressed streams are processed in Aspose.PDF 19.2 for C++. A specially crafted PDF can cause a dangling heap pointer, resulting in a use-after-free condition. To trigger this vulnerability, a specifically crafted PDF document needs to be processed by the target application.

NVD Source

Technical Analysis

CVE-2019-5066 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 9.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.