Vulnerability-Lookup

CVE-2025-34047 (GCVE-0-2025-34047)

Vulnerability from cvelistv5 – Published: 2025-06-26 16:10 – Updated: 2025-12-23 16:49 X_Known Exploited Vulnerability

Shadowserver Previdian

Title

Leadsec VPN Path Traversal Arbitrary File Read

Summary

A path traversal vulnerability exists in the Leadsec SSL VPN (formerly Lenovo NetGuard), allowing unauthenticated attackers to read arbitrary files on the underlying system via the ostype parameter in the /vpn/user/download/client endpoint. This flaw arises from insufficient input sanitation, enabling traversal sequences to escape the intended directory and access sensitive files. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-05 UTC.

Severity

8.7 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-23 16:48 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-20 - Improper Input Validation

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 8179 records in the last 180 days details

References

4 references

URL	Tags
https://www.cnvd.org.cn/flaw/show/CNVD-2021-64035	third-party-advisory
https://github.com/projectdiscovery/nuclei-templa…	exploit
https://www.leadsec.com.cn/	product
https://vulncheck.com/advisories/leadsec-vpn-path…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Beijing NetGuard Nebula Information Technology Co., Ltd.	Leadsec SSL VPN	Affected: 0	guessed

Shadowserver

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: 7a29ec24-0c08-49c3-b85c-d778e0dbc6c7

Vulnerability ID: CVE-2025-34047

Status: Confirmed

Status Updated: 2026-11-12 00:00 UTC

Exploited: Yes

Timestamps

First Seen: 2026-01-08

Asserted: 2026-01-08

Last Seen: 2026-11-12

Scope

Asset Exposure: ['internet-facing']

Notes: Affected: Beijing NetGuard Nebula Information Technology / Leadsec VPN | Class: vpn | IoT: no | In CISA KEV: no | Honeypot connections on 2026-11-12: 19

Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details

1D	2
Iot	no
Feed	Shadowserver Foundation honeypot/exploited-vulnerabilities
Type	http-scan
Class	vpn
7D Avg	1
Vendor	Beijing NetGuard Nebula Information Technology
30D Avg	1
90D Avg	1
Product	Leadsec VPN
Cisa Kev	no
Connections	19
Observation Date	2026-11-12
Vulnerability Class	None
Vulnerability Score	None
Vulnerability Severity	None

References

Created: 2026-06-30 09:22 UTC | Updated: 2026-11-14 01:00 UTC

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: ff4e5e6e-f391-4a55-9c01-f71e72c94be7

Vulnerability ID: CVE-2025-34047

Status: Confirmed

Status Updated: 2026-02-04 00:00 UTC

Exploited: Yes

Timestamps

First Seen: 2026-02-04

Asserted: 2026-02-04

Scope

Notes: KEVIntel entry: Leadsec VPN Path Traversal Arbitrary File Read | Affected: Beijing NetGuard Nebula Information Technology Co., Ltd. / Leadsec SSL VPN | CVSS: 8.7 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: True

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details

Feed	KEVIntel (kevintel.com)
Title	Leadsec VPN Path Traversal Arbitrary File Read
Vendor	Beijing NetGuard Nebula Information Technology Co., Ltd.
Product	Leadsec SSL VPN
Added Date	2026-02-04T00:00:00.000Z
Cvss Score	8.7
Epss Score	None
Cvss Severity	HIGH
Epss Percentile	None
Used In Malware	unknown
Ahead Of Cisa Kev	None
Not Yet In Cisa Kev	True

References

Created: 2026-06-23 14:03 UTC | Updated: 2026-07-10 06:14 UTC

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2025-34047

Vulnerability from fkie_nvd - Published: 2025-06-26 16:15 - Updated: 2026-06-17 09:13

Shadowserver Previdian

Severity

8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-64035.yaml
	disclosure@vulncheck.com	https://vulncheck.com/advisories/leadsec-vpn-path-traversal-file-read
	disclosure@vulncheck.com	https://www.cnvd.org.cn/flaw/show/CNVD-2021-64035
	disclosure@vulncheck.com	https://www.leadsec.com.cn/
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-64035.yaml

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Web Management Interface (/vpn/user/download/client CGI endpoint)",
            "ostype (used in client download URL)"
          ],
          "product": "Leadsec SSL VPN",
          "vendor": "Beijing NetGuard Nebula Information Technology Co., Ltd.",
          "versions": [
            {
              "status": "affected",
              "version": "0"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A path traversal vulnerability exists in the Leadsec SSL VPN (formerly Lenovo NetGuard), allowing unauthenticated attackers to read arbitrary files on the underlying system via the ostype parameter in the /vpn/user/download/client endpoint. This flaw arises from insufficient input sanitation, enabling traversal sequences\u00a0to escape the intended directory and access sensitive files.\u00a0Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-05 UTC."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de path traversal en Leadsec SSL VPN (anteriormente Lenovo NetGuard), que permite a atacantes no autenticados leer archivos arbitrarios en el sistema subyacente mediante el par\u00e1metro ostype en el endpoint /vpn/user/download/client. Esta falla se debe a una depuraci\u00f3n de entrada insuficiente, lo que permite que las secuencias de cruce escapen del directorio de destino y accedan a archivos confidenciales."
    }
  ],
  "id": "CVE-2025-34047",
  "lastModified": "2026-06-17T09:13:22.493",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-34047",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-12-23T16:48:39.113728Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-06-26T16:15:28.140",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-64035.yaml"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://vulncheck.com/advisories/leadsec-vpn-path-traversal-file-read"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.cnvd.org.cn/flaw/show/CNVD-2021-64035"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.leadsec.com.cn/"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-64035.yaml"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-F369-PP94-CGWP

Vulnerability from github – Published: 2025-06-26 18:31 – Updated: 2025-11-20 21:30

Details

Severity

8.7 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-34047"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-26T16:15:28Z",
    "severity": "HIGH"
  },
  "details": "A path traversal vulnerability exists in the Leadsec SSL VPN (formerly Lenovo NetGuard), allowing unauthenticated attackers to read arbitrary files on the underlying system via the ostype parameter in the /vpn/user/download/client endpoint. This flaw arises from insufficient input sanitation, enabling traversal sequences\u00a0to escape the intended directory and access sensitive files.",
  "id": "GHSA-f369-pp94-cgwp",
  "modified": "2025-11-20T21:30:29Z",
  "published": "2025-06-26T18:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-34047"
    },
    {
      "type": "WEB",
      "url": "https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-64035.yaml"
    },
    {
      "type": "WEB",
      "url": "https://vulncheck.com/advisories/leadsec-vpn-path-traversal-file-read"
    },
    {
      "type": "WEB",
      "url": "https://www.cnvd.org.cn/flaw/show/CNVD-2021-64035"
    },
    {
      "type": "WEB",
      "url": "https://www.leadsec.com.cn"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2025-34047 (GCVE-0-2025-34047)

Shadowserver

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Honeypot In The Wild Attempts Confidence: 70% Source: shadowserver

Details

References

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 70% Source: kevintel

Details

References

FKIE_CVE-2025-34047

GHSA-F369-PP94-CGWP

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour