#VU52990 Buffer overflow in MikroTik RouterOS

Published: 2021-05-10 | Updated: 2021-06-01

Vulnerability identifier: #VU52990

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-20237


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MikroTik RouterOS
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: MikroTik


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the sniffer process. A remote authenticated user can pass specially crafted data to the system, trigger invalid memory access and crash the affected process.

Install update from vendor's website.

Vulnerable software versions

MikroTik RouterOS: 6.48 - 6.48.2, 6.47 - 6.47.9, 6.46.3 - 6.46.8

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability