Search/CVE-2025-34237
● CVE — Medium

CVE-2025-34237

VendoradvantechProductwebaccess/vpnDiscoveredNov 6, 2025UpdatedOct 7, 2026

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.

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CVSS v3.1
5.4 MEDIUM
EPSS
0.22%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 22, 2026
▲ 0.01pp
0.20% → 0.22% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionREQUIRED
ScopeCHANGED
ConfidentialityLOW
IntegrityLOW
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Connections
2 relationships
Timeline
disclosure → media coverage
Nov 6, 2025
Disclosure — published as a CVE record. · last revised by NVD Oct 7, 2026