Is CVE-2019-3976 actively exploited?

No active exploitation of CVE-2019-3976 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-3976 be exploited remotely?

Yes. CVE-2019-3976 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-3976?

CVE-2019-3976 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2019-3976

CWE-23Published: October 29, 2019· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below are vulnerable to an arbitrary directory creation vulnerability via the upgrade package's name field. If an authenticated user installs a malicious package then a directory could be created and the developer shell could be enabled.

NVD Source

Technical Analysis

CVE-2019-3976 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low 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 8.8.