CVE-2023-2866

highpriority · track · 31OT risk · elevatedEPSS 0.001 · 4 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.14% (4th) EPSS

CVSS 7.8 · high

Is it mine?

5 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

If an attacker can trick an authenticated user into loading a maliciously crafted .zip file onto Advantech WebAccess version 8.4.5, a web shell could be used to give the attacker full control of the SCADA server.

remediations

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

A vendor fix is available.

FixedWebAccess/SCADAcisa_csaf_ot
Advantech recommends users locate and delete the �WADashboardSetup.msi� file to avoid this issue.

cvss

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

7.8

010

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

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.07.3highCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.3highCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.3highCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Hsecondary · ics-cert@hq.dhs.gov USexploitability 1.3 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-345USprimaryCWE-345USCWE-351USCWE-351USCWE-351US

affected products (5)

Products and version ranges known to be affected.

WebAccess/SCADA: 8.4.5all versionscisa_csaf_otUS
Advantech WebAccess/SCADAall versionscisa_csaf_otUS
Advantech WebAccess/SCADA≤ 8.4.5enisa_euvdEU
Advantech Co., Ltd Advantech WebAccess/SCADA≤ 9.1.4fstec_bduRU
advantech webaccess= 8.4.5nvdUScpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-23-150-01Advantech WebAccess/SCADA2023-05-25icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow an attacker full control over the SCADA (supervisory control and data acquisition) server.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2023-06-07modified 2026-06-17

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+1443 more

references (6)

External citations — patches, advisories, analysis.

scry

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