What is CVE-2022-36522?

CVE-2022-36522 is a medium-severity vulnerability in Mikrotik Routeros, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2022-08-26.

How severe is CVE-2022-36522?

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

Vulnerability in Mikrotik Routeros

CVE-2022-36522

Mikrotik RouterOs through stable v6.48.3 was discovered to contain an assertion failure in the component /advanced-tools/nova/bin/netwatch. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted packet.

Published 2022-08-26 · last modified 2026-06-17.

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: 0.016 (74.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.016 · change: +0.000

Affected products

Mikrotik Routeros

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

seclists.org/fulldisclosure/2021/Jul/0 (Exploit, Mailing List, Third Party Advisory)
github.com/cq674350529/pocs_slides/blob/master/advisory/MikroTik/CVE-2022-36522… (Third Party Advisory)

Frequently asked questions

What is CVE-2022-36522?: CVE-2022-36522 is a medium-severity vulnerability in Mikrotik Routeros, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2022-08-26.
How severe is CVE-2022-36522?: Medium severity. CVSS v3 base score is 6.5 out of 10.