Advantech WebAccess/VPN up to 1.1.4 NetworksController.addNetworkAction cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Advantech WebAccess and VPN up to 1.1.4. It has been rated as problematic. This affects the function NetworksController.addNetworkAction. Performing a manipulation results in cross site scripting. This vulnerability was named CVE-2025-34236. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Advantech WebAccess and VPN up to 1.1.4. This affects the function NetworksController.addNetworkAction. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

Advantech WebAccess/VPN versions prior to 1.1.5 contain a stored cross-site scripting (XSS) vulnerability via NetworksController.addNetworkAction(). 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.

The weakness was presented by Alex Williams. It is possible to read the advisory at icr.advantech.com. This vulnerability is uniquely identified as CVE-2025-34236 since 04/15/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are necessary for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 1.1.5 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.9
VulDB Meta Temp Score: 3.8

VulDB Base Score: 2.4
VulDB Temp Score: 2.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: WebAccess/VPN 1.1.5

Timelineinfo

04/15/2025 CVE reserved
11/06/2025 +205 days Advisory disclosed
11/06/2025 +0 days VulDB entry created
11/28/2025 +22 days VulDB entry last update

Sourcesinfo

Vendor: advantech.com

Advisory: icr.advantech.com
Researcher: Alex Williams
Status: Confirmed

CVE: CVE-2025-34236 (🔒)
GCVE (CVE): GCVE-0-2025-34236
GCVE (VulDB): GCVE-100-331443

Entryinfo

Created: 11/06/2025 21:57
Updated: 11/28/2025 19:39
Changes: 11/06/2025 21:57 (69), 11/28/2025 19:39 (11)
Complete: 🔍
Cache ID: 216::103

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