CVE-2019-3977 Details
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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2019-3977
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.86 Probability of exploitation activity being observed over the next 30 days (74th percentile)
CVSS score for CVE-2019-3977
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
7.5 High
Products affected by CVE-2019-3977
RouterOS 5.22
RouterOS 5.23
RouterOS 5.24
RouterOS 5.25
RouterOS 5.26
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Not available
More on DVE scores

CVE-2019-3977 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
RU 2,637 13.45%
ID 1,059 5.40%
BR 1,006 5.13%
IN 894 4.56%
UA 889 4.53%
VN 877 4.47%
US 834 4.25%
PL 667 3.40%
CZ 600 3.06%
BD 584 2.98%

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CVE-2019-3977 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 5,076 74.91%
Technology 1,401 20.68%
Energy/Resources 76 1.12%
Consumer Goods 63 0.93%
Government/Politics 29 0.43%
Education 24 0.35%
Business Services 23 0.34%
Utilities 18 0.27%
Finance 14 0.21%
Media/Entertainment 12 0.18%

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