How severe is CVE-2025-34238?

CVE-2025-34238 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-34238 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-34238?

CVE-2025-34238 affects Advantech Webaccess/vpn. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-34238?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-34238 have an EU (EUVD) identifier?

Yes. CVE-2025-34238 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-38167.

When was CVE-2025-34238 published?

CVE-2025-34238 was published on 2025-11-06 and last updated on 2026-06-17.

CVE-2025-34238

CVE-2025-34238 is a medium-severity vulnerability in Advantech Webaccess/vpn with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-38167
Weakness: CWE-22
Affected product: Advantech Webaccess/vpn
Published: 2025-11-06
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-34238?: 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.
How severe is CVE-2025-34238?: CVE-2025-34238 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-34238 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-34238?: CVE-2025-34238 affects Advantech Webaccess/vpn. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-34238?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-34238 have an EU (EUVD) identifier?: Yes. CVE-2025-34238 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-38167.
When was CVE-2025-34238 published?: CVE-2025-34238 was published on 2025-11-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:advantech:webaccess\/vpn:*:*:*:*:*:*:*:*

More vulnerabilities in Advantech Webaccess/vpn

CVE-2025-34239 — High (CVSS 7.2): Advantech WebAccess/VPN versions prior to 1.1.5 contain a command injection vulnerability…
CVE-2025-34247 — Medium (CVSS 6.5): Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability…
CVE-2025-34246 — Medium (CVSS 6.5): Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability…
CVE-2025-34245 — Medium (CVSS 6.5): Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability…
CVE-2025-34244 — Medium (CVSS 6.5): Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability…
CVE-2025-34243 — Medium (CVSS 6.5): Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability…

All CVEs affecting Advantech Webaccess/vpn →

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…

Browse all CWE-22 (Path Traversal) vulnerabilities →