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TI-2025-24383 Aliases CVE-2025-34237GHSA-c27p-92mm-fc82

Advantech WebAccess/VPN < 1.1.5 Stored XSS via StandaloneVpnClientsController.addStandaloneVpnClientAction()

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Advantech WebAccess/VPN versions prior to 1.1.5 contain a stored cross-site scripting (XSS) vulnerability via StandaloneVpnClientsController.addStandaloneVpnClientAction(). Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00216 12th percentileScored 2026-11-07
Fix Fixed WebAccess/VPN (Advantech): 1.1.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AdvantechWebAccess/VPNbefore 1.1.51.1.5Patch availableCNA
  • WebAccess/VPN VendorAdvantech Affected before 1.1.5 Fixed in 1.1.5 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:advantech:webaccess\/vpn:*:*:*:*:*:*:*:*before 1.1.5VulnerableAdvantech
  • cpe:2.3:a:advantech:webaccess\/vpn:*:*:*:*:*:*:*:* Versions before 1.1.5 Vulnerable ·Advantech

Remediation

  • Fix · CNA WebAccess/VPN (Advantech) Fixed in 1.1.5

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Advantech WebAccess/VPN — icr.advantech.com/support/router-models/download/511/sa-202…

    12 records Highest priority Priority MEDIUM 2 MEDIUM, 10 LOW

    Other records, highest priority first

    • TI-2025-24385 Advantech WebAccess/VPN < 1.1.5 Command Injection in AppManagementController.appUpgradeAction()Priority MEDIUM 49
    • TI-2025-24386 Advantech WebAccess/VPN < 1.1.5 SQL Injection via AppManagementController.appUpgradeAction()Priority MEDIUM 45
    • TI-2025-24388 Advantech WebAccess/VPN < 1.1.5 SQL Injection via AjaxNetworkController.ajaxAction()Priority LOW 39
    Show all 12 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-34237
  2. 2026-10-03 Alias added: GHSA-c27p-92mm-fc82

References

Patch 1

Other 1

  • TI-2025-24385 Advantech WebAccess/VPN < 1.1.5 Command Injection in AppManagementController.appUpgradeAction() CVSS 4.0HIGH 8.6
  • TI-2025-24386 Advantech WebAccess/VPN < 1.1.5 SQL Injection via AppManagementController.appUpgradeAction() CVSS 4.0HIGH 8.6
  • TI-2025-24388 Advantech WebAccess/VPN < 1.1.5 SQL Injection via AjaxNetworkController.ajaxAction() CVSS 4.0HIGH 8.6
  • TI-2025-24384 Path traversal in Advantech WebAccess/VPN CVSS 4.0MEDIUM 6.9
  • TI-2025-24382 Advantech WebAccess/VPN < 1.1.5 Stored XSS via NetworksController.addNetworkAction() CVSS 4.0MEDIUM 6.2
  • TI-2025-24392 Advantech WebAccess/VPN < 1.1.5 SQL Injection via AjaxPrevalidationController.ajaxAction() CVSS 4.0MEDIUM 5.3
See all 11 →

Sources

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