CVE-2019-3977 - 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

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HIGH

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

Published Oct 28, 2019

7.5

HIGH

CVSS 3.1

EPSS 1.06%

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.

Affected products

Vendor n/a Product MikroTik RouterOS Default
n/a
- Version
  RouterOS 6.45.6 Stable and below. RouterOS 6.44.5 Long-term and below.
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

MikroTik RouterOS

n/a

Version	Status	Constraints
RouterOS 6.45.6 Stable and below. RouterOS 6.44.5 Long-term and below.	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-494

References (1)

https://www.tenable.com/security/research/tra-2019-46
x_refsource_MISCThird Party Advisory

Link	Providers	Tags
https://www.tenable.com/security/research/tra-2019-46		x_refsource_MISCThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner tenable

Published Oct 28, 2019

Updated Aug 4, 2024

Reserved Jan 3, 2019

Link CVE-2019-3977

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2019-3977

Red Hat

Severity n/a

Public date n/a

Links CVE-2019-3977