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CVE-2019-3977

HIGH

7.5

CVSS Score

Published: October 28, 2019 at 09:34 PM UTC

Updated: June 17, 2026 at 02:35 AM UTC

1 product affected across 1 vendorRouterOS

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

RouterOS · Mikrotik

95%

v ≤ 6.44.5v ≤ 6.45.6RouterOS 6.45.6 Stable and below. RouterOS 6.44.5 Long-term and below.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCThird Party Advisory

Source: [email protected]

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

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-494

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