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.
Published: 2026-06-04
Score: 9.3 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 05 Jun 2026 08:00:00 +0000

Type Values Removed Values Added
First Time appeared Mobatek
Mobatek mobaxterm
Vendors & Products Mobatek
Mobatek mobaxterm

Thu, 04 Jun 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 04 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
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.
Title Mobatek MobaXterm 12.1 Buffer Overflow via Sessions File
Weaknesses CWE-120
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Mobatek Mobaxterm
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-04T15:06:20.007Z

Reserved: 2026-06-04T11:11:45.519Z

Link: CVE-2019-25741

cve-icon Vulnrichment

Updated: 2026-06-04T14:51:43.002Z

cve-icon NVD

Status : Deferred

Published: 2026-06-04T14:16:32.787

Modified: 2026-06-04T15:00:40.757

Link: CVE-2019-25741

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-05T07:45:35Z

Weaknesses