Vulnerability-Lookup

CVE-2019-25741 (GCVE-0-2019-25741)

Vulnerability from cvelistv5 – Published: 2026-06-04 13:22 – Updated: 2026-06-04 15:06

Title

Mobatek MobaXterm 12.1 Buffer Overflow via Sessions File

Summary

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.

Severity

9.3 (Critical)


                        
                          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

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

VulnCheck

References

3 references

URL	Tags
https://www.exploit-db.com/exploits/47429	exploit
https://download.mobatek.net/1112019010310554/Mob…	product
https://www.vulncheck.com/advisories/mobatek-moba…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Mobatek	Mobatek MobaXterm	Affected: 12.1

Date Public

2019-08-31 00:00

Credits

Xavi Beltran

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2019-25741

Vulnerability from fkie_nvd - Published: 2026-06-04 14:16 - Updated: 2026-07-22 20:10

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://download.mobatek.net/1112019010310554/MobaXterm_Portable_v11.1.zip
	disclosure@vulncheck.com	https://www.exploit-db.com/exploits/47429
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/mobatek-mobaxterm-buffer-overflow-via-sessions-file

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Mobatek MobaXterm",
          "vendor": "Mobatek",
          "versions": [
            {
              "status": "affected",
              "version": "12.1"
            }
          ]
        }
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    }
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  "cveTags": [],
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    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Mobatek MobaXterm 12.1 contiene una vulnerabilidad de desbordamiento de b\u00fafer basada en el manejo estructurado de excepciones (SEH) en el campo de nombre de usuario de los archivos de sesi\u00f3n que permite a atacantes remotos ejecutar c\u00f3digo arbitrario. Los atacantes pueden crear un archivo de sesiones de MobaXterm malicioso con datos de desbordamiento que activa la vulnerabilidad cuando se importa y ejecuta, lo que permite la ejecuci\u00f3n de una shell inversa con privilegios de usuario."
    }
  ],
  "id": "CVE-2019-25741",
  "lastModified": "2026-07-22T20:10:00.127",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "subConfidentialityImpact": "NONE",
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          "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
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          "options": [
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  "published": "2026-06-04T14:16:32.787",
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    {
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      "url": "https://download.mobatek.net/1112019010310554/MobaXterm_Portable_v11.1.zip"
    },
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  "vulnStatus": "Deferred",
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        {
          "lang": "en",
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}

GHSA-288F-Q89M-R9QR

Vulnerability from github – Published: 2026-06-04 15:30 – Updated: 2026-06-04 15:30

Details

Severity

9.8 (Critical)


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

9.3 (Critical)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2019-25741"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-04T14:16:32Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-288f-q89m-r9qr",
  "modified": "2026-06-04T15:30:39Z",
  "published": "2026-06-04T15:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-25741"
    },
    {
      "type": "WEB",
      "url": "https://download.mobatek.net/1112019010310554/MobaXterm_Portable_v11.1.zip"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/47429"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/mobatek-mobaxterm-buffer-overflow-via-sessions-file"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2019-25741 (GCVE-0-2019-25741)

FKIE_CVE-2019-25741

GHSA-288F-Q89M-R9QR

Tags

Sightings

Nomenclature