Code injection in Advantech WebAccess/SCADA
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-94.
Summary
In Advantech WebAccss/SCADA v9.1.3 and prior, there is an arbitrary file overwrite vulnerability, which could allow an attacker to overwrite any file in the operating system (including system files), inject code into an XLS file, and modify the file extension, which could lead to arbitrary code execution.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-32540
- 2026-10-03 Alias added: GHSA-g8xw-m45c-jphf
References
More Advantech Webaccess/scada vulnerabilities
- TI-2023-01357 Memory corruption in Advantech WebAccess/SCADA CVSS 3.1CRITICAL 9.8
- TI-2019-04573 WebAccess/SCADA, Version 8.3. CVSS 3.0CRITICAL 9.8
- TI-2021-12552 Stack-based buffer overflow in WebAccess/SCADA CVSS 3.1CRITICAL 9.8
- TI-2019-04577 WebAccess/SCADA, Version 8.3. CVSS 3.0CRITICAL 9.8
- TI-2023-15909 Unrestricted file upload in Advantech WebAccess/SCADA CVSS 3.1CRITICAL 9.8
- TI-2025-13544 Advantech WebAccess/SCADA Unrestricted Upload of File with Dangerous Type CVSS 4.0HIGH 8.7
Sources
- CVE-2023-32540 · CVE Program
- CVE-2023-32540 · NVD
- FIRST EPSS
- GHSA-g8xw-m45c-jphf · GitHub Advisory Database · CC BY 4.0
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