Is CVE-2019-9764 actively exploited?

No active exploitation of CVE-2019-9764 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-9764 be exploited remotely?

Yes. CVE-2019-9764 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-9764?

CVE-2019-9764 has a CVSS score of 7.4 (HIGH).

HOME VULNERABILITIESCVE-2019-9764

HIGH

CVE-2019-9764

CWE-346Published: March 26, 2019· Updated: Jun 17, 2026

7.4

CVSS v3.1

Official Description

HashiCorp Consul 1.4.3 lacks server hostname verification for agent-to-agent TLS communication. In other words, the product behaves as if verify_server_hostname were set to false, even when it is actually set to true. This is fixed in 1.4.4.

NVD Source

Technical Analysis

CVE-2019-9764 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), with a CVSS base score of 7.4.