CVE-2017-20149

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/BigNerd95/Chimay-RedExploit, Third Party Advisory
https://www.bleepingcomputer.com/news/security/hajime-botnet-makes-a-comeback-with-massive-scan-for-mikrotik-routers/Exploit, Third Party Advisory
https://github.com/BigNerd95/Chimay-RedExploit, Third Party Advisory
https://www.bleepingcomputer.com/news/security/hajime-botnet-makes-a-comeback-with-massive-scan-for-mikrotik-routers/Exploit, Third Party Advisory

Timeline

Published: Oct 15, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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