Buffer overflow in Mikrotik Routeros
CVE-2020-20246
Mikrotik RouterOs stable 6.46.3 suffers from a memory corruption vulnerability in the mactel process. An authenticated remote attacker can cause a Denial of Service due to improper memory access.
Vulnerability class: Buffer Overflow
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: 0.027 (85.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Mikrotik Routeros — versions 6.46.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- mikrotik.com/ (Product)
- seclists.org/fulldisclosure/2021/May/23 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/162533/MikroTik-RouterOS-Memory-Corruption.html (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-20246?
- CVE-2020-20246 is a medium-severity vulnerability in Mikrotik Routeros, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-05-18.
- How severe is CVE-2020-20246?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-20246 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.