CVE-2018-18999

highpriority · track · 30EPSS 0.023 · 83 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.31% (83rd) EPSS

CVSS 7.5 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-28

WebAccess/SCADA, WebAccess/SCADA Version 8.3.2 installed on Windows 2008 R2 SP1. Lack of proper validation of user supplied input may allow an attacker to cause the overflow of a buffer on the stack.

remediations

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

A vendor fix is available.

FixedWebAccess/SCADAcisa_csaf_ot
Advantech has released Version 8.3.4 of WebAccess/SCADA to address the reported vulnerability. Users can download the latest version of WebAccess/SCADA at the following location (registration required):
http://support.advantech.com/support/DownloadSRDetail_New.aspx?SR_ID=1-S9MJV&Doc_Source=Download

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.7–7.5

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lprimary · NVD / NIST USexploitability 3.9 · impact 3.4

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

v3.16.7mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-20USCWE-20US

affected products (4)

Products and version ranges known to be affected.

WebAccess/SCADA: Version 8.3.2 installed on Windows 2008 R2 SP1all versionscisa_csaf_otUS
Advantech WebAccess/SCADAall versionscisa_csaf_otUS
n/a WebAccess/SCADA≤ WebAccess/SCADA Version 8.3.2 installed on Windows 2008 R2 SP1enisa_euvdEU
advantech webaccess/scada= 8.3.2nvdUScpe:2.3:a:advantech:webaccess\/scada:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-18-352-02Advantech WebAccess/SCADA2018-12-18icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could cause a stack buffer overflow condition.

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 2018-12-19modified 2026-06-17

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+16132 more

references (10)

External citations — patches, advisories, analysis.

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