CVE-2025-11137Network attack vector

Stored script execution via crafted file name

Published Sep 29, 2025 · Updated Sep 29, 2025

Stored XSS in Gstarsoft GstarCAD Viewer Web 9.0 through 9.4.0 allows remote authenticated users to inject script through a renamed file. The file-renaming handler stores an attacker-controlled name and later renders it as active browser content; the affected function is undisclosed. A low-privileged account and victim interaction are required, and the bounded impact is unauthorized modification of displayed web content.

CVSS severity3.5
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Gstarsoft GstarCAD Viewer Web 9.0 through 9.4.0 allows remote authenticated users to inject script through a renamed file. The file-renaming handler stores an attacker-controlled name and later renders it as active browser content; the affected function is undisclosed. A low-privileged account and victim interaction are required, and the bounded impact is unauthorized modification of displayed web content.

The record

CVE
CVE-2025-11137
Published
Sep 29, 2025
Updated
Sep 29, 2025
Vendor
Gstarsoft Co., Ltd.
Product
GstarCAD
Classifications
CWE-79, CWE-94
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 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=9.0
  2. Affected versionversion=9.1
  3. Affected versionversion=9.2
  4. Affected versionversion=9.3
  5. Affected versionversion=9.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gstarsoft Co., Ltd. · GstarCADversion=9.0; version=9.1; version=9.2; version=9.3; version=9.4.0

Published CVSS scores

3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
2.0NIST NVDCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E: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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')

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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