CVE-2026-11879 HIGH

CVE-2026-11879: Arbitrary code execution in MobaXterm Personal Edition (Portable)

Vendor Mobatek
Product MobaXterm Personal Edition (Portable)
Weakness CWE-427
Published June 12, 2026
Last update June 12, 2026

CVSS base score

8.5/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

MobaXterm Personal Edition (Portable), in its 26.3 version (Build 5154), allows arbitrary code execution by loading malicious DLLs from a temporary directory that is predictable and can be modified by the user. During startup, the application searches for specific DLLs in this location before resorting to the system’s secure paths, enabling an attacker with local access to place a specially crafted DLL to be executed automatically when the victim launches the application.

Key dates

02Disclosure timeline

June 12, 2026 CVE published
June 12, 2026 Record updated