CVE-2017-6027

highpriority · track · 40EPSS 0.026 · 85 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.63% (85th) 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 2026-10-27

An Arbitrary File Upload issue was discovered in 3S-Smart Software Solutions GmbH CODESYS Web Server. The following versions of CODESYS Web Server, part of the CODESYS WebVisu web browser visualization software, are affected: CODESYS Web Server Versions 2.3 and prior. A specially crafted web server request may allow the upload of arbitrary files (with a dangerous type) to the CODESYS Web Server without authorization which may allow remote code execution.

remediations

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

No vendor fix yet; a mitigation is available.

MitigationCODESYS Web Servercisa_csaf_ot
3S-Smart Software Solutions GmbH recommends that device manufacturers who program their devices with CODESYS refer to the device directory to determine if they may be affected. The device directory can be found at the following location:
http://devices.codesys.com/device-directory.html

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

v3.09.8criticalCVSS:3.0/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

v3.09criticalCVSS:3.0/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-434USprimaryCWE-434US

affected products (4)

Products and version ranges known to be affected.

CODESYS Web Server: Versions 2.3 and priorall versionscisa_csaf_otUS
3S-Smart Software Solutions GmbH CODESYS Web Server≤ 2.3cisa_csaf_otUS
n/a 3S-Smart Software Solutions GmbH CODESYS Web Server≤ 3S-Smart Software Solutions GmbH CODESYS Web Serverenisa_euvdEU
codesys web server≤ 2.3nvdUScpe:2.3:a:codesys:web_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-17-087-023S-Smart Software Solutions GmbH CODESYS Web Server2017-03-28icsa · cisa_csaf_otUS
ATTENTION: Remotely exploitable/low skill level to exploit.

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 2017-05-19modified 2026-06-17

related (5,033)

Related entries.

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CVE-2026-48908US	critical9.8OT critical	88.5% (100th)	KEV	2026-06-20
A vulnerability in SP Page Builder for Joomla allows unauthenticated users to upload arbitrary files, ultimately resulting in the upload and execution of PHP code.
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+5028 more

references (7)

External citations — patches, advisories, analysis.

http://store.codesys.com/codesys-23.html#ProduktbeschreibungPatchcnnvd
https://ics-cert.us-cert.gov/advisories/ICSA-17-087-02 cnnvd
https://www.securityfocus.com/bid/97174 cnnvd
http://www.securityfocus.com/bid/97174 enisa_euvd
https://ics-cert.us-cert.gov/advisories/ICSA-17-087-02 enisa_euvd
http://www.securityfocus.com/bid/97174Third Party AdvisoryVDB Entrynvd
https://ics-cert.us-cert.gov/advisories/ICSA-17-087-02Third Party AdvisoryUS Government Resourcenvd

scry

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