CVE-2025-8729Public exploitNetwork attack vector

Arbitrary file overwrite via unchecked upload path

Published Aug 8, 2025 · Updated Aug 8, 2025

Path traversal in MigoXLab LMeterX 1.2.0 allows remote attackers to overwrite server files through the certificate-upload API. The process_cert_files function joins an unvalidated task_id beneath UPLOAD_FOLDER, allowing ../ segments to escape that directory before the uploaded file is opened for writing. A multipart POST to /api/upload is sufficient, and the overwrite is limited by the backend process's filesystem permissions.

CVSS severity9.1
Critical
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in MigoXLab LMeterX 1.2.0 allows remote attackers to overwrite server files through the certificate-upload API. The process_cert_files function joins an unvalidated task_id beneath UPLOAD_FOLDER, allowing ../ segments to escape that directory before the uploaded file is opened for writing. A multipart POST to /api/upload is sufficient, and the overwrite is limited by the backend process's filesystem permissions.

The record

CVE
CVE-2025-8729
Published
Aug 8, 2025
Updated
Aug 8, 2025
Vendor
MigoXLab
Product
LMeterX
Classifications
CWE-22, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MigoXLab · LMeterXversion=1.2.0

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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