CVE-2017-20149
CVSS v3
9.8
CRITICAL
EPSS Score
2.0 %
exploit probability, as of 2026-10-04
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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?
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.
Is CVE-2017-20149 actively exploited?
Active exploitation of CVE-2017-20149 has not been confirmed. Its EPSS score was 2.0% on 2026-10-04, 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).
Is CVE-2017-20149 affecting your environment?
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