CVE-2021-38431

mediumpriority · track · 17OT risk · elevatedEPSS 0.007 · 53 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.70% (53rd) EPSS

CVSS 4 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationWebAccess/SCADAcisa_csaf_ot
Advantech recommends users upgrade to v9.1.1 or later.
https://www.advantech.com/support/details/installation?id=1-MS9MJV

cvss

Technical severity, 0–10. One row per scoring source.

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.04.3mediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · CISA US

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · ics-cert@hq.dhs.gov USexploitability 2.8 · impact 1.4

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-862USprimaryCWE-862US

affected products (4)

Products and version ranges known to be affected.

WebAccess/SCADA: Versions 9.0.3 and priorall versionscisa_csaf_otUS
Advantech WebAccess/SCADA≤ 9.0.3cisa_csaf_otUS
Advantech WebAccess SCADA≤ All ≤9.0.3enisa_euvdEU
advantech webaccess scada≤ 9.0.3nvdUScpe:2.3:a:advantech:webaccess_scada:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-21-285-01Advantech WebAccess SCADA2021-10-12icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow an attacker to access project names and paths.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2021-10-15modified 2026-06-17

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+11478 more

references (6)

External citations — patches, advisories, analysis.

scry

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