EIP-2026-116174

PRE-CVE

RealVNC Server 4.0 - Remote Denial of Service

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-116174. PoCs published by Uz4yh4N.

AI-analyzed exploit summary This exploit demonstrates a remote denial-of-service (DoS) vulnerability in RealVNC 4.0 by establishing a large number of connections (160) to the server on port 5900, overwhelming the target system. The code is a simple network-based attack that floods the server with connections, causing it to crash or become unresponsive.

Description

RealVNC Server 4.0 - Remote Denial of Service

Exploits (1)

exploitdb WORKING POC VERIFIED
by Uz4yh4N · cdoswindows
https://www.exploit-db.com/exploits/24412

This exploit demonstrates a remote denial-of-service (DoS) vulnerability in RealVNC 4.0 by establishing a large number of connections (160) to the server on port 5900, overwhelming the target system. The code is a simple network-based attack that floods the server with connections, causing it to crash or become unresponsive.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: RealVNC 4.0
No auth needed
Prerequisites: Network access to the target system · RealVNC server running on port 5900
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026