CVE-2025-11948Network attack vector

Unauthenticated code execution via unrestricted file upload

Published Oct 20, 2025 · Updated Oct 20, 2025

Unrestricted file upload in Excellent Infotek 筆硯公文管理系統 5.0 and earlier allows remote attackers to execute server-side code. A specific upload function fails to sanitize the supplied file path or restrict file types and extensions, so server-executable web shells are accepted. No authentication or user interaction is required, and successful exploitation grants code execution on the application server.

CVSS severity9.3
Critical
EPSS probability0.94%
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 Excellent Infotek 筆硯公文管理系統 5.0 and earlier allows remote attackers to execute server-side code. A specific upload function fails to sanitize the supplied file path or restrict file types and extensions, so server-executable web shells are accepted. No authentication or user interaction is required, and successful exploitation grants code execution on the application server.

The record

CVE
CVE-2025-11948
Published
Oct 20, 2025
Updated
Oct 20, 2025
Vendor
Excellent Infotek Corporation
Product
筆硯公文管理系統
Classifications
CWE-434, CAPEC-650, T1190, T1505.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 20, 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=0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Excellent Infotek Corporation · 筆硯公文管理系統version=0

Published CVSS scores

9.3TWCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-650Upload a Web Shell to a Web Server
T1190Exploit Public-Facing Application
T1505.003Web Shell

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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