Buffer overflow in Mikrotik Routeros

CVE-2018-1156

Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to stack buffer overflow through the license upgrade interface. This vulnerability could theoretically allow a remote authenticated attacker execute arbitrary code on the system.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.074 (94.4th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-1156: rose from 0.062 to 0.074.

EPSS over last 30 days · oldest: 0.062 · newest: 0.074 · change: +0.012

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-1156?
CVE-2018-1156 is a high-severity vulnerability in Mikrotik Routeros, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2018-08-23.
How severe is CVE-2018-1156?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-1156 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.