Cyber Resilience

CVE-2025-67653

Path Traversal in Advantech Webaccess\/Scada 9.2.1

Path Traversal
Published
18 December 2025
Modified
31 December 2025
Patch / advisory
View advisory
CVSS Score v4 5.3
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0063 47th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-67653 is a medium-severity Path Traversal (CWE-22) vulnerability in Advantech Webaccess\/Scada. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique File and Directory Discovery (T1083); ranked at the 47th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

Advantech WebAccess/SCADA is vulnerable to directory traversal, which may allow an attacker to determine the existence of arbitrary files.

CWE(s)
CWE-22

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Directory traversal directly enables arbitrary file existence checks (T1083 File and Directory Discovery) on a public-facing SCADA web application (T1190 Exploit Public-Facing Application).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-14850Same product: Advantech Webaccess\/Scada
CVE-2025-58423Same vendor: Advantech
CVE-2025-59171Same vendor: Advantech
CVE-2025-62630Same vendor: Advantech
CVE-2017-16720Same vendor: Advantech
CVE-2025-46704Same vendor: Advantech
CVE-2025-34238Same vendor: Advantech
CVE-2026-33670Shared CWE-22
CVE-2025-14182Shared CWE-22
CVE-2026-6410Shared CWE-22

Affected Assets

advantech
webaccess\/scada
9.2.1

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AC-3 Access Enforcement
  • SI-10 Information Input Validation
  • AC-6 Least Privilege
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.3.2

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match
prevent

Directly enforces access control policies on file paths so that directory traversal sequences cannot reach unauthorized files.

SI-10 Information Input Validation good match
prevent

Requires validation of user-supplied input (file paths) to reject traversal sequences such as '../' before any file-system operation occurs.

AC-6 Least Privilege partial match
prevent

Limits the privileges of the web server process so that even a successful traversal yields only the minimal set of files the service account is allowed to see.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-02 partial match
prevents

Patching/maintenance can remediate known path-traversal flaws in deployed software (partial prevention of exploitability) but does nothing to stop the coding defect from being introduced in the first place.

PR.AA-05 none match
prevents

PR.AA-05 defines and reviews access policies but does not address code-level pathname neutralization, so neither direction prevents CWE-22.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
detects

Security testing in development catches path traversal via static/dynamic analysis.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates input validation and path sanitization that directly prevent path traversal.

A.8.26 Application security requirements partial match
prevents

Application security requirements include rules for safe file handling and canonicalization.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles require least-privilege file access and directory isolation.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly forbid unsafe path construction and mandate safe APIs.

A.8.3 Information access restriction partial match
mitigates

Information access restriction limits which files an application may read or write.

References