How severe is CVE-2021-38431?

CVE-2021-38431 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-38431 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38431?

CVE-2021-38431 affects Advantech Webaccess Scada. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38431?

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

When was CVE-2021-38431 published?

CVE-2021-38431 was published on 2021-10-15 and last updated on 2026-06-17.

CVE-2021-38431

CVE-2021-38431 is a medium-severity vulnerability in Advantech Webaccess Scada with a CVSS 3.x base score of 4.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Advantech Webaccess Scada
Published: 2021-10-15
Last modified: 2026-06-17

Description

An authenticated user using Advantech WebAccess SCADA in versions 9.0.3 and prior can use API functions to disclose project names and paths from other users.

Frequently asked questions

What is CVE-2021-38431?: An authenticated user using Advantech WebAccess SCADA in versions 9.0.3 and prior can use API functions to disclose project names and paths from other users.
How severe is CVE-2021-38431?: CVE-2021-38431 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-38431 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38431?: CVE-2021-38431 affects Advantech Webaccess Scada. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38431?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-38431 published?: CVE-2021-38431 was published on 2021-10-15 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-285-01

Affected products (1)

cpe:2.3:a:advantech:webaccess_scada:*:*:*:*:*:*:*:*

More vulnerabilities in Advantech Webaccess Scada

CVE-2018-8845 — Critical (CVSS 9.8): In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard…
CVE-2018-7505 — Critical (CVSS 9.8): In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard…
CVE-2018-7499 — Critical (CVSS 9.8): In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard…
CVE-2018-7497 — Critical (CVSS 9.8): In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard…
CVE-2018-10589 — Critical (CVSS 9.8): In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard…
CVE-2018-8841 — High (CVSS 7.8): In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard…

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