TI-2023-02686 Aliases CVE-2023-2866 GHSA-pc93-2w93-6f7v

Advantech WebAccess Insufficient Type Distinction

LOW 35CWE-351Published 2023-06-07 · Updated 2025-01-16

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Security bypass
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-345.

Summary

If an attacker can trick an authenticated user into loading a maliciously crafted .zip file onto Advantech WebAccess version 8.4.5, a web shell could be used to give the attacker full control of the SCADA server.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00143 3rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

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

Vendor	Product	Affected versions	Fixed in	Status	Source
Advantech	WebAccess/SCADA	8.4.5	—	No fix listed	CNA

WebAccess/SCADA VendorAdvantech Affected 8.4.5 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:advantech:webaccess:8.4.5:::::::*	8.4.5	Vulnerable	Advantech

cpe:2.3:a:advantech:webaccess:8.4.5:*:*:*:*:*:*:* Versions 8.4.5 Vulnerable ·Advantech

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-2866
2026-10-03 Alias added: GHSA-pc93-2w93-6f7v

References

Advisory 1

https://www.cisa.gov/news-events/ics-advisories/icsa-23-150-01

TI-2016-00768 Unrestricted file upload vulnerability in the uploadImageCommon function in the… CVSS 3.0CRITICAL 9.8
TI-2017-12289 Path traversal in Advantech WebAccess CVSS 3.0CRITICAL 9.8
TI-2016-00771 Multiple heap-based buffer overflows in Advantech WebAccess before 8.1 allow remote… CVSS 3.0CRITICAL 9.8
TI-2016-00770 Multiple stack-based buffer overflows in Advantech WebAccess before 8.1 allow remote… CVSS 3.0CRITICAL 9.8
TI-2018-11192 Out-of-bounds write in Advantech WebAccess CVSS 3.0HIGH 8.8
TI-2021-16012 Stack-based buffer overflow in Advantech WebAccess CVSS 3.1CRITICAL 9.8

See all 102 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences