CVE-2023-3626Public exploitNetwork attack vector

Remote code execution via unfiltered Filedata upload

Published Jul 11, 2023 · Updated Aug 2, 2024

Unrestricted file upload in Mountain Flood Disaster Prevention Monitoring and Early Warning System 20230706 allows remote attackers to execute code. The UpLoadFloodPlanFile handler accepts a multipart Filedata value without filtering its filename or type and saves it under a web-accessible UploadFile path. A remote request can therefore place an executable ASPX web shell on the server and use it for persistent code execution without user interaction.

CVSS severity9.8
Critical
EPSS probability0.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Mountain Flood Disaster Prevention Monitoring and Early Warning System 20230706 allows remote attackers to execute code. The UpLoadFloodPlanFile handler accepts a multipart Filedata value without filtering its filename or type and saves it under a web-accessible UploadFile path. A remote request can therefore place an executable ASPX web shell on the server and use it for persistent code execution without user interaction.

The record

CVE
CVE-2023-3626
Published
Jul 11, 2023
Updated
Aug 2, 2024
Vendor
Istrong
Product
Mountain Flood Disaster Prevention Monitoring and Early Warning System
Classifications
CWE-434, CAPEC-1, T1505.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=20230706

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Istrong · Mountain Flood Disaster Prevention Monitoring and Early Warning Systemversion=20230706

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-434Unrestricted Upload of File with Dangerous Type
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
T1505.003Server Software Component: Web Shell

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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