Is CVE-2019-18377 actively exploited?

No active exploitation of CVE-2019-18377 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-18377 be exploited remotely?

Yes. CVE-2019-18377 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-18377?

CVE-2019-18377 has a CVSS score of 7.2 (HIGH).

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HIGH

CVE-2019-18377

NVD-CWE-noinfoPublished: December 11, 2019· Updated: Jun 17, 2026

7.2

CVSS v3.1

Official Description

Symantec Messaging Gateway, prior to 10.7.3, may be susceptible to a privilege escalation vulnerability, which is a type of issue whereby an attacker may attempt to compromise the software application to gain elevated access to resources that are normally protected from an application or user.

NVD Source

Technical Analysis

CVE-2019-18377 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 7.2.