An Arbitrary File Upload issue was discovered in 3S-Smart Software Solutions GmbH CODESYS Web Server.

published 2017-05-19 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-15095

cvss: 9.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.6%; EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-17-087-02 updated 2017-03-28 cvss 9.8

3S-Smart Software Solutions GmbH CODESYS Web Server

3S-Smart Software Solutions GmbH CODESYS Web Server <= 2.3
affected: mitigation “3S-Smart Software Solutions GmbH recommends that users register for an account and download patch V.1.1.9.18 from the following location:”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

2.63% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a 3S-Smart Software Solutions GmbH CODESYS Web Server

Classification

Weakness

CWE-434 Unrestricted Upload of File with Dangerous Type

References

securityfocus.com /bid/97174
vdb-entry, third-party-advisory
ics-cert.us-cert.gov /advisories/ICSA-17-087-02
third-party-advisory, us-government-resource

Sources

CVE List CVE-2017-6027
NVD CVE-2017-6027

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary