Path Traversal in Mikrotik Routeros

CVE-2019-3976

RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below are vulnerable to an arbitrary directory creation vulnerability via the upgrade package's name field. If an authenticated user installs a malicious package then a directory could be created and the developer shell could be enabled.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.5th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2019-3976: held from 0.017 to 0.017.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

  • Mikrotik Routeros
  • Mikrotik Routeros — versions RouterOS 6.45.6 Stable and below. RouterOS 6.44.5 Long-term and below.

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-3976?
CVE-2019-3976 is a high-severity vulnerability in Mikrotik Routeros, classified under Relative Path Traversal. CVSS score: 8.8/10. Published 2019-10-29.
How severe is CVE-2019-3976?
High severity. CVSS v3 base score is 8.8 out of 10.