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CVE-2019-3977 Details

Description

RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where upgrade packages are download from when using the autoupgrade feature. Therefore, a remote attacker can trick the router into "upgrading" to an older version of RouterOS and possibly reseting all the system's usernames and passwords.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.tenable.com/security/research/tra-2019-46	CVE	Third Party Advisory
https://www.tenable.com/security/research/tra-2019-46	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-494	Download of Code Without Integrity Check	[email protected]
CWE-494	Download of Code Without Integrity Check	[email protected]

Affected Products

Product	Versions
mikrotik routeros	<= 6.44.5 <= 6.45.6
CPE cpe:2.3:o:mikrotik:routeros:::::ltr:::* cpe:2.3:o:mikrotik:routeros:::::-:::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 1, 2019	Initial Analysis	[email protected]