CVE-2018-6537

CRITICAL

Flexense SyncBreeze Enterprise 10.4.18 - Remote Code Execution via Control Protocol Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 4 public exploits for CVE-2018-6537. PoCs published by Daniel Teixeira, damariion, krnlcrow.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in Sync Breeze Enterprise v10.4.18, leveraging SEH overwrite to achieve remote code execution via a bind shell. The payload includes shellcode generated by msfvenom and a structured header to trigger the overflow.

Description

A buffer overflow vulnerability in the control protocol of Flexense SyncBreeze Enterprise v10.4.18 allows remote attackers to execute arbitrary code by sending a crafted packet to TCP port 9121.

Exploits (4)

exploitdb WORKING POC
by Daniel Teixeira · pythonremotewindows
https://www.exploit-db.com/exploits/43936

This exploit targets a buffer overflow vulnerability in Sync Breeze Enterprise v10.4.18, leveraging SEH overwrite to achieve remote code execution via a bind shell. The payload includes shellcode generated by msfvenom and a structured header to trigger the overflow.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Sync Breeze Enterprise v10.4.18
No auth needed
Prerequisites: Network access to target · Target running Sync Breeze Enterprise v10.4.18 on Windows 7 x86
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by damariion · poc
https://github.com/damariion/CVE-2018-6537.RCE

This repository contains a functional exploit for CVE-2018-6537, targeting Sync Breeze version 10.4.18 on Windows 10 (x86). The exploit leverages a SEH overflow via a TCP connection to achieve remote code execution, assuming security mitigations like ASLR and DEP are disabled.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Sync Breeze 10.4.18
No auth needed
Prerequisites: Sync Breeze 10.4.18 running on Windows 10 (x86) · Security mitigations (ASLR, DEP) disabled · Network access to the target host and port
devstral-2 · analyzed Apr 10, 2026 Full analysis →
nomisec WORKING POC
by damariion · poc
https://github.com/damariion/CVE-2018-6537

This repository contains a functional exploit for CVE-2018-6537, targeting Sync Breeze 10.4.18 on Windows 10 (x86). The exploit leverages a SEH overflow via a crafted TCP payload to achieve remote code execution, assuming security mitigations like ASLR, CFG, and DEP are disabled.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Sync Breeze 10.4.18
No auth needed
Prerequisites: Disabled security mitigations (ASLR, CFG, DEP) · Windows 10 x86 (build 16299) · Network access to target
devstral-2 · analyzed Mar 01, 2026 Full analysis →
nomisec WORKING POC
by krnlcrow · poc
https://github.com/krnlcrow/CVE-2018-6537

This exploit targets a SEH overflow vulnerability in Sync Breeze 10.4.18 on Windows 10 (x86) via a TCP connection, allowing unauthenticated remote code execution. It uses a structured buffer with NOP sleds, SEH/NSEH overwrites, and shellcode execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Sync Breeze 10.4.18
No auth needed
Prerequisites: Disabled security mitigations (ASLR, CFG, DEP) · Network access to Sync Breeze service
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/43936/

Scores

CVSS v3 9.8
EPSS 0.0406
EPSS Percentile 89.4%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (1)
flexense/syncbreeze 10.4.18
Published Feb 02, 2018
Tracked Since Feb 18, 2026