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Tool Directory

CVE-2023-30800

HighPublished

MikroTik RouterOS Web Interface Heap Corruption

Published: Sep 7, 2023
Updated: Nov 21, 2025
Assigning CNA: VulnCheck
Evidence observed: Aug 8, 2026

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS probability estimate

1.7%

Low · next 30 days

Percentile: 75.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The web server used by MikroTik RouterOS version 6 is affected by a heap memory corruption issue. A remote and unauthenticated attacker can corrupt the server's heap memory by sending a crafted HTTP request. As a result, the web interface crashes and is immediately restarted. The issue was fixed in RouterOS 6.49.10 stable. RouterOS version 7 is not affected.

Sources

cve-2023-30800-multithread-doserExploit
Multithredded DoS Python Script For CVE-2023-30800
CVE-2023-30800_PoCPoC
Proof of concept for CVE-2023-30800
CVE-2023-30800_PoC_goPoC
Proof-of-concept exploit for CVE-2023-30800, demonstrating a web application vulnerability with a Go-based payload generator for security testing and validation.

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