CVE-2019-3977

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.18% Top 25%
Third-Party Advisory tenable.com
Affected: n/a MikroTik RouterOS
Published at:
Updated at:

References

Link Tags
https://www.tenable.com/security/research/tra-2019-46 third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-3977?
CVE-2019-3977 has been scored as a high severity vulnerability.
How to fix CVE-2019-3977?
To fix CVE-2019-3977, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-3977 being actively exploited in the wild?
It is possible that CVE-2019-3977 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-3977?
CVE-2019-3977 affects n/a MikroTik RouterOS.
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