Is CVE-2019-18339 actively exploited?

No active exploitation of CVE-2019-18339 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-18339 be exploited remotely?

Yes. CVE-2019-18339 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-18339?

CVE-2019-18339 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2019-18339

CRITICAL

CVE-2019-18339

CWE-306Published: December 12, 2019· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability has been identified in SiNVR/SiVMS Video Server (All versions < V5.0.0). The HTTP service (default port 5401/tcp) of the SiVMS/SiNVR Video Server

contains an authentication bypass vulnerability, even when properly

configured with enforced authentication.

A remote attacker with network access to the Video Server could

exploit this vulnerability to read the SiVMS/SiNVR users database, including

the passwords of all users in obfuscated cleartext.

NVD Source

Technical Analysis

CVE-2019-18339 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.