How severe is CVE-2025-34243?

CVE-2025-34243 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-2025-34243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-34243?

CVE-2025-34243 affects Advantech Webaccess/vpn. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-34243?

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

Does CVE-2025-34243 have an EU (EUVD) identifier?

Yes. CVE-2025-34243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-38173.

When was CVE-2025-34243 published?

CVE-2025-34243 was published on 2025-11-06 and last updated on 2026-06-17.

CVE-2025-34243

CVE-2025-34243 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-89.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 5.3
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-38173
Weakness: CWE-89
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 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.

Frequently asked questions

What is CVE-2025-34243?: 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.
How severe is CVE-2025-34243?: CVE-2025-34243 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-2025-34243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-34243?: CVE-2025-34243 affects Advantech Webaccess/vpn. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-34243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-34243 have an EU (EUVD) identifier?: Yes. CVE-2025-34243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-38173.
When was CVE-2025-34243 published?: CVE-2025-34243 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…
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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-2025-34242 — Medium (CVSS 6.5): Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability…

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