NULL pointer dereference in Mikrotik Routeros

CVE-2020-20250

Mikrotik RouterOs before stable version 6.47 suffers from a memory corruption vulnerability in the /nova/bin/lcdstat process. An authenticated remote attacker can cause a Denial of Service (NULL pointer dereference). NOTE: this is different from CVE-2020-20253 and CVE-2020-20254. All four vulnerabilities in the /nova/bin/lcdstat process are discussed in the CVE-2020-20250 github.com/cq674350529 reference.

EPSS: 0.017 (75.0th 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

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-20250?
CVE-2020-20250 is a medium-severity vulnerability in Mikrotik Routeros, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2021-07-13.
How severe is CVE-2020-20250?
Medium severity. CVSS v3 base score is 6.5 out of 10.