Which versions of Webaccess Vpn are affected by CVE-2025-34238?

CVE-2025-34238 presents notable security risk, a path traversal vulnerability rated CVSS 6.9. This could allow unauthorized file access.

How to fix or mitigate CVE-2025-34238?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review file handling controls.

Webaccess Vpn CVE-2025-34238

Q: What is the CVSS score of CVE-2025-34238?

CVE-2025-34238 has a CVSS 4.0 base score of 6.9 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/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 exploitation probability: 0.1%.

MEDIUM

Path Traversal (CWE-22)

2025-11-06 disclosure@vulncheck.com

Path Traversal Webaccess Vpn

6.9

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

6.9 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:20 vuln.today

CVE Published

Nov 06, 2025 - 20:15 nvd

MEDIUM 6.9

DescriptionCVE.org

Advantech WebAccess/VPN versions prior to 1.1.5 contain an absolute path traversal via AjaxStandaloneVpnClientsController.ajaxDownloadRoadWarriorConfigFileAction() that allows an authenticated network administrator to cause the application to read and return the contents of arbitrary files the web user (www-data) can access.

AnalysisAI

Advantech WebAccess/VPN versions prior to 1.1.5 contain an absolute path traversal via AjaxStandaloneVpnClientsController.ajaxDownloadRoadWarriorConfigFileAction() that allows an authenticated. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. Advantech WebAccess/VPN versions prior to 1.1.5 contain an absolute path traversal via AjaxStandaloneVpnClientsController.ajaxDownloadRoadWarriorConfigFileAction() that allows an authenticated network administrator to cause the application to read and return the contents of arbitrary files the web user (www-data) can access. Affected products include: Advantech Webaccess\/Vpn. Version information: prior to 1.1.5.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.