What is CVE-2019-16160?

CVE-2019-16160 is a high-severity vulnerability in Mikrotik Routeros, classified under Integer Underflow. CVSS score: 7.5/10. Published 2020-10-07.

How severe is CVE-2019-16160?

High severity. CVSS v3 base score is 7.5 out of 10.

Integer overflow in Mikrotik Routeros

CVE-2019-16160

An integer underflow in the SMB server of MikroTik RouterOS before 6.45.5 allows remote unauthenticated attackers to crash the service.

Published 2020-10-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.026 (84.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000

Affected products

Mikrotik Routeros

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

mikrotik.com (Product)
forum.mikrotik.com/viewtopic.php (Vendor Advisory)
gist.github.com/thebabush/3c71fc5001f8865e3ad579e80680ce24 (Third Party Advisory)

Frequently asked questions

What is CVE-2019-16160?: CVE-2019-16160 is a high-severity vulnerability in Mikrotik Routeros, classified under Integer Underflow. CVSS score: 7.5/10. Published 2020-10-07.
How severe is CVE-2019-16160?: High severity. CVSS v3 base score is 7.5 out of 10.