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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.017 (76.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
Weakness classification (CWE)
References
- mikrotik.com/ (Vendor Advisory)
- github.com/cq674350529/pocs_slides/blob/master/advisory/MikroTik/CVE-2020-20250… (Exploit, Third Party Advisory)
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.