CVE-2019-6550

highpriority · track · 41EPSS 0.061 · 93 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

6.09% (93rd) EPSS

CVSS 7.5 · 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

Advantech WebAccess/SCADA, Versions 8.3.5 and prior. Multiple stack-based buffer overflow vulnerabilities, caused by a lack of proper validation of the length of user-supplied data, may allow remote code execution.

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 8.4.0 of WebAccess/SCADA to address the reported vulnerabilities.
https://support.advantech.com/support/DownloadSRDetail_New.aspx?SR_ID=1-MS9MJV&Doc_Source=Download

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

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

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-119USCWE-121USCWE-121US

affected products (5)

Products and version ranges known to be affected.

WebAccess/SCADA: Versions 8.3.5 and priorall versionscisa_csaf_otUS
Advantech WebAccess/SCADA≤ 8.3.5cisa_csaf_otUS
Advantech WebAccess/SCADA≤ Versions 8.3.5 and prior.enisa_euvdEU
Advantech Co., Ltd Advantech WebAccess≤ 8.3.5fstec_bduRU
advantech webaccess≤ 8.3.5nvdUScpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-19-092-01Advantech WebAccess/SCADA2019-04-02icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities may cause a denial of service and allow remote code execution.

also known as (4)

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 2019-04-05modified 2026-06-17

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+16120 more

references (13)

External citations — patches, advisories, analysis.

scry

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