CVE-2023-5079Network attack vector

Unauthenticated file disclosure via improper input validation

Published Nov 8, 2023 · Updated Sep 3, 2024

Improper input validation in Lenovo LeCloud Application before 7.0.25.99 allows remote attackers to download arbitrary files. Lenovo's public record says crafted input reaches arbitrary components and file-download handling, but it does not identify the endpoint, parameter, or precise validation error. No authentication or user interaction is required, and the documented consequence is disclosure of files accessible through the affected application.

CVSS severity7.5
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Lenovo LeCloud Application before 7.0.25.99 allows remote attackers to download arbitrary files. Lenovo's public record says crafted input reaches arbitrary components and file-download handling, but it does not identify the endpoint, parameter, or precise validation error. No authentication or user interaction is required, and the documented consequence is disclosure of files accessible through the affected application.

The record

CVE
CVE-2023-5079
Published
Nov 8, 2023
Updated
Sep 3, 2024
Vendor
Lenovo
Product
LeCloud Application
Classifications
CWE-20, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2024Record 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=Versions prior to 7.0.25.99

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Lenovo · LeCloud Applicationversion=Versions prior to 7.0.25.99

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5LenovoCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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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