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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Mobatek Mobatek MobaXterm affected
Version Status Constraints
12.1 affected —

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://download.mobatek.net/1112019010310554/MobaXterm_Portable_v11.1.zip cve-icon cve-icon
https://www.exploit-db.com/exploits/47429 cve-icon cve-icon
https://www.vulncheck.com/advisories/mobatek-mobaxterm-buffer-overflow-via-sessions-file cve-icon cve-icon
History

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'}

Projects

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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: 2026-06-04T15:30:17Z

Weaknesses