CRITICAL

CVE-2017-20149

CVSS v3

9.8

CRITICAL

EPSS Score

2.5 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2017-20149 yet.

Full record on NVD

Description

The Mikrotik RouterOS web server allows memory corruption in releases before Stable 6.38.5 and Long-term 6.37.5, aka Chimay-Red. A remote and unauthenticated user can trigger the vulnerability by sending a crafted HTTP request. An attacker can use this vulnerability to execute arbitrary code on the affected system, as exploited in the wild in mid-2017 and later.

Technical details

Published: 2022-10-15

Frequently asked questions

What is CVE-2017-20149?

Is CVE-2017-20149 actively exploited?

Active exploitation of CVE-2017-20149 has not been confirmed. Its EPSS score was 2.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-20149?

CVE-2017-20149 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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