CVE-2020-20264
MEDIUMCVSS 6.5/10EPSS 2.10%
Last modified
CVE-2020-20264 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Mikrotik RouterOs before 6.47 (stable tree) in the /ram/pckg/advanced-tools/nova/bin/netwatch process. An authenticated remote attacker can cause a Denial of Service due to a divide by zero error.. EPSS estimates a 2.10% chance of exploitation in the next 30 days.
Description
Mikrotik RouterOs before 6.47 (stable tree) in the /ram/pckg/advanced-tools/nova/bin/netwatch process. An authenticated remote attacker can cause a Denial of Service due to a divide by zero error.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mikrotik | Routeros | < 6.47 |
References
- https://github.com/cq674350529/pocs_slides/blob/master/pocs/MikroTik/vul_netwatch/README.mdBroken Link, Third Party Advisory
- https://seclists.org/fulldisclosure/2021/May/11Exploit, Mailing List, Third Party Advisory
- https://github.com/cq674350529/pocs_slides/blob/master/pocs/MikroTik/vul_netwatch/README.mdBroken Link, Third Party Advisory
- https://seclists.org/fulldisclosure/2021/May/11Exploit, Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-20264?
Mikrotik RouterOs before 6.47 (stable tree) in the /ram/pckg/advanced-tools/nova/bin/netwatch process. An authenticated remote attacker can cause a Denial of Service due to a divide by zero error.
How severe is CVE-2020-20264?
CVE-2020-20264 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.10% probability of exploitation in the next 30 days.
How do I fix CVE-2020-20264?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-20264?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST