CVE-2019-25741

CRITICAL

Mobatek MobaXterm 12.1 Buffer Overflow via Sessions File

Title source: cna

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-25741. PoCs published by Xavi Beltran.

AI-analyzed exploit summary This exploit demonstrates a SEH-based buffer overflow in Mobatek MobaXterm 12.1 by crafting a malicious sessions file. The payload triggers a reverse shell when the user imports and clicks the session.

Description

Mobatek MobaXterm 12.1 contains a structured exception handling (SEH) based buffer overflow vulnerability in the username field of session files that allows remote attackers to execute arbitrary code. Attackers can craft a malicious MobaXterm sessions file with overflow data that triggers the vulnerability when imported and executed, enabling reverse shell execution with user privileges.

Exploits (1)

exploitdb WORKING POC

by Xavi Beltran · pythonlocalwindows

https://www.exploit-db.com/exploits/47429

View Code ZIP pw:eip

This exploit demonstrates a SEH-based buffer overflow in Mobatek MobaXterm 12.1 by crafting a malicious sessions file. The payload triggers a reverse shell when the user imports and clicks the session.

Classification

Working Poc 100%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: Mobatek MobaXterm 12.1

No auth needed

Prerequisites: Target must import and interact with the malicious sessions file · Attacker must have a reachable listener for the reverse shell

MITRE ATT&CK

T1190 - Exploit Public-Facing Application T1059 - Command and Scripting Interpreter T1203 - Exploitation for Client Execution

devstral-2 · analyzed Jun 04, 2026 Full analysis →

References (3)

Core 3

Core References

Exploit exploit

ExploitDB-47429

https://www.exploit-db.com/exploits/47429

Product product

Product Reference

https://download.mobatek.net/1112019010310554/MobaXterm_Portable_v11.1.zip

Third Party Advisory third-party-advisory

VulnCheck Advisory: Mobatek MobaXterm 12.1 Buffer Overflow via Sessions File

https://www.vulncheck.com/advisories/mobatek-mobaxterm-buffer-overflow-via-sessions-file

Scores

CVSS v3 9.8

EPSS 0.0064

EPSS Percentile 45.8%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-120

Status published

Products (1)

Mobatek/Mobatek MobaXterm 12.1

Published Jun 04, 2026

Tracked Since Jun 04, 2026