Advantech WebAccess/VPN up to 1.1.4 Search Parameter AjaxFwRulesController.ajaxNetworkFwRulesAction sql injection

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Advantech WebAccess and VPN up to 1.1.4. Affected is the function AjaxFwRulesController.ajaxNetworkFwRulesAction of the component Search Parameter Handler. Performing a manipulation results in sql injection. This vulnerability is reported as CVE-2025-34243. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Advantech WebAccess and VPN up to 1.1.4. This affects the function AjaxFwRulesController.ajaxNetworkFwRulesAction of the component Search Parameter Handler. The manipulation with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability in AjaxFwRulesController.ajaxNetworkFwRulesAction() that allows an authenticated low-privileged observer user to inject SQL via datatable search parameters, leading to disclosure of database information.

The weakness was disclosed by Alex Williams. It is possible to read the advisory at icr.advantech.com. This vulnerability is uniquely identified as CVE-2025-34243 since 04/15/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

Upgrading to version 1.1.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-38173). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Vendor

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Version

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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: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Sql injection
CWE: CWE-89 / CWE-74 / CWE-707
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
11/29/2025 +23 days VulDB entry last update

Sourcesinfo

Vendor: advantech.com

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

CVE: CVE-2025-34243 (🔒)
GCVE (CVE): GCVE-0-2025-34243
GCVE (VulDB): GCVE-100-331407
EUVD: 🔒

Entryinfo

Created: 11/06/2025 21:46
Updated: 11/29/2025 03:25
Changes: 11/06/2025 21:46 (70), 11/28/2025 19:39 (11), 11/29/2025 03:25 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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