How severe is CVE-2023-4203?

CVE-2023-4203 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-4203 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4203?

CVE-2023-4203 primarily affects Advantech Eki-1524 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-4203?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-4203 published?

CVE-2023-4203 was published on 2023-08-08 and last updated on 2026-06-17.

CVE-2023-4203

CVE-2023-4203 is a critical-severity vulnerability in Advantech Eki-1524 Firmware with a CVSS 3.x base score of 9.0. 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-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Advantech Eki-1524 Firmware
Published: 2023-08-08
Last modified: 2026-06-17

Description

Advantech EKI-1524, EKI-1522, EKI-1521 devices through 1.21 are affected by a Stored Cross-Site Scripting vulnerability, which can be triggered by authenticated users in the ping tool of the web-interface.

Frequently asked questions

What is CVE-2023-4203?: Advantech EKI-1524, EKI-1522, EKI-1521 devices through 1.21 are affected by a Stored Cross-Site Scripting vulnerability, which can be triggered by authenticated users in the ping tool of the web-interface.
How severe is CVE-2023-4203?: CVE-2023-4203 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-4203 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4203?: CVE-2023-4203 primarily affects Advantech Eki-1524 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-4203?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-4203 published?: CVE-2023-4203 was published on 2023-08-08 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:advantech:eki-1524_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:advantech:eki-1522_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:advantech:eki-1521_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Advantech Eki-1524 Firmware

CVE-2023-4202 — Critical (CVSS 9.0): Advantech EKI-1524, EKI-1522, EKI-1521 devices through 1.21 are affected by a Stored Cross-Site Scripting…
CVE-2023-2575 — High (CVSS 8.8): Advantech EKI-1524, EKI-1522, EKI-1521 devices through 1.21 are affected by a Stack-based Buffer Overflow…
CVE-2023-2574 — High (CVSS 8.8): Advantech EKI-1524, EKI-1522, EKI-1521 devices through 1.21 are affected by an command injection vulnerability in the…
CVE-2023-2573 — High (CVSS 8.8): Advantech EKI-1524, EKI-1522, EKI-1521 devices through 1.21 are affected by an command injection vulnerability in the…

All CVEs affecting Advantech Eki-1524 Firmware →

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