How severe is CVE-2023-32540?

CVE-2023-32540 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-32540 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-32540?

CVE-2023-32540 affects Advantech Webaccess/scada. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-32540?

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

When was CVE-2023-32540 published?

CVE-2023-32540 was published on 2023-06-06 and last updated on 2026-06-17.

CVE-2023-32540

CVE-2023-32540 is a high-severity vulnerability in Advantech Webaccess/scada with a CVSS 3.x base score of 7.2. 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-94.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Advantech Webaccess/scada
Published: 2023-06-06
Last modified: 2026-06-17

Description

In Advantech WebAccss/SCADA v9.1.3 and prior, there is an arbitrary file overwrite vulnerability, which could allow an attacker to overwrite any file in the operating system (including system files), inject code into an XLS file, and modify the file extension, which could lead to arbitrary code execution.

Frequently asked questions

What is CVE-2023-32540?: In Advantech WebAccss/SCADA v9.1.3 and prior, there is an arbitrary file overwrite vulnerability, which could allow an attacker to overwrite any file in the operating system (including system files), inject code into an XLS file, and modify the file extension, which could lead to arbitrary code execution.
How severe is CVE-2023-32540?: CVE-2023-32540 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-32540 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-32540?: CVE-2023-32540 affects Advantech Webaccess/scada. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-32540?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-32540 published?: CVE-2023-32540 was published on 2023-06-06 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-152-01

Affected products (1)

cpe:2.3:a:advantech:webaccess\/scada:*:*:*:*:*:*:*:*

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