CVE-2023-30800

HIGH

MikroTik RouterOS 6.0-6.49.9 - Unauthenticated Denial of Service via HTTP Request

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2023-30800. PoCs published by diemaxxing, griffinsectio.

AI-analyzed exploit summary This is a multithreaded Python script designed to exploit CVE-2023-30800, a DoS vulnerability in Mikrotik RouterOS Web servers. It sends malformed POST requests to the '/jsproxy' endpoint with binary data to trigger the vulnerability.

Description

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.

Exploits (3)

nomisec WORKING POC 1 stars
by diemaxxing · poc
https://github.com/diemaxxing/cve-2023-30800-multithread-doser

This is a multithreaded Python script designed to exploit CVE-2023-30800, a DoS vulnerability in Mikrotik RouterOS Web servers. It sends malformed POST requests to the '/jsproxy' endpoint with binary data to trigger the vulnerability.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Mikrotik RouterOS Web server
No auth needed
Prerequisites: Python 3.6+ · requests library · network access to target
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by griffinsectio · poc
https://github.com/griffinsectio/CVE-2023-30800_PoC_go

This Go-based PoC exploits CVE-2023-30800 by sending a malformed hex-encoded payload to a vulnerable endpoint. The exploit targets a DoS vulnerability in the target software by continuously sending the payload.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Unknown (likely a network service with a vulnerable 'jsproxy' endpoint)
No auth needed
Prerequisites: Network access to the target's 'jsproxy' endpoint
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by griffinsectio · poc
https://github.com/griffinsectio/CVE-2023-30800_PoC

This PoC exploits CVE-2023-30800 by sending a malformed payload to the '/jsproxy' endpoint, causing a denial-of-service (DoS) condition. The exploit continuously sends the payload until the target crashes or becomes unresponsive.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Unknown (likely a web server or proxy service vulnerable to CVE-2023-30800)
No auth needed
Prerequisites: Network access to the target's '/jsproxy' endpoint
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0170
EPSS Percentile 74.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-787
Status published
Products (1)
mikrotik/routeros 6.0 - 6.49.10
Published Sep 07, 2023
Tracked Since Feb 18, 2026