What is CVE-2020-20266?

CVE-2020-20266 is a medium-severity vulnerability in Mikrotik Routeros, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2021-05-19.

How severe is CVE-2020-20266?

Medium severity. CVSS v3 base score is 6.5 out of 10.

NULL pointer dereference in Mikrotik Routeros

CVE-2020-20266

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).

EPSS: 0.021 (79.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mikrotik Routeros
N/a — versions n/a

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference
CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC, Broken Link)
cve@mitre.org (Exploit, Mailing List, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-20266?: CVE-2020-20266 is a medium-severity vulnerability in Mikrotik Routeros, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2021-05-19.
How severe is CVE-2020-20266?: Medium severity. CVSS v3 base score is 6.5 out of 10.