CVE-2020-20266
MEDIUMMikrotik RouterOS < 6.47 - Authenticated Denial of Service via dot1x Process NULL Pointer Dereference
Title source: llmDescription
Mikrotik RouterOs before 6.47 (stable tree) suffers from a memory corruption vulnerability in the /nova/bin/dot1x process. An authenticated remote attacker can cause a Denial of Service (NULL pointer dereference).
References (2)
Core 2
Core References
Broken Link, Third Party Advisory x_refsource_misc
https://github.com/cq674350529/pocs_slides/blob/master/pocs/MikroTik/vul_dot1x/README.md
Exploit, Mailing List, Third Party Advisory x_refsource_misc
https://seclists.org/fulldisclosure/2021/May/11
Scores
CVSS v3
6.5
EPSS
0.0210
EPSS Percentile
79.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
CWE-787
Status
published
Products (1)
mikrotik/routeros
< 6.47
Published
May 19, 2021
Tracked Since
Feb 18, 2026