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Fencer Vulns
critical 9.8

CVE-2019-13548 json

CODESYS V3 web server, all versions prior to 3.5.14.10, allows an attacker to send specially crafted http or https requests which could cau…

published 2019-09-13 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-5003

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.2%
EPSS 6.2% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

CODESYS V3 web server, all versions prior to 3.5.14.10, allows an attacker to send specially crafted http or https requests which could cause a stack overflow and create a denial-of-service condition or allow remote code execution.

Patch / fix

  • codesys control_for_beaglebone 3.5.14.10
  • codesys control_for_empc-a/imx6 3.5.14.10
  • codesys control_for_iot2000 3.5.14.10
  • codesys control_for_linux 3.5.14.10
  • codesys control_for_pfc100 3.5.14.10
  • codesys control_for_pfc200 3.5.14.10
  • codesys control_for_raspberry_pi 3.5.14.10
  • codesys control_rte 3.5.12.80, 3.5.14.10
  • codesys control_runtime_system_toolkit 3.5.12.80
  • codesys control_win 3.5.14.10
  • codesys embedded_target_visu_toolkit 3.5.12.80
  • codesys hmi 3.5.12.80, 3.5.14.10
  • codesys remote_target_visu_toolkit 3.5.12.80

Vendor advisories

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

cisa ICSA-26-076-01 updated cvss 9.8

CODESYS in Festo Automation Suite

  • CODESYS Development System 3.0 Festo Automation Suite 2.8.0.137, Festo Automation Suite < 2.8.0.138 CODESYS Development System 3.5.16.10 Festo Automation Suite 2.8.0.137, Festo Automation Suite < 2.8.0.138
    affected: mitigation
  • Festo Automation Suite 2.8.0.138 CODESYS Development System 3.5.21.20
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-25-273-04 updated cvss 9.8

Festo Controller CECC-S,-LK,-D Family Firmware (Update A)

  • Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-D (All versions) Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-S (All versions) Festo Firmware (R06 (11.10.2016) = 2.3.8.1) installed on Festo Hardware Controller CECC-LK (All versions) Festo Firmware (R06 (11.10.2016) = 2.3.8.1) installed on Festo Hardware Controller CECC-S (All versions)
    affected: mitigation “Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:” certvde.com

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

cisa ICSA-19-255-01 updated cvss 10.0

3S-Smart Software Solutions GmbH CODESYS V3 Web Server

  • 3S-Smart Software Solutions GmbH CODESYS Control for BeagleBone containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS Control for emPC-A/iMX6 containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS Control for IOT2000 containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS Control for Linux containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS Control for PFC100 containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS Control for PFC200 containing the webserver CmpWebServer < 3.5.14.10
    +8 more products
    3S-Smart Software Solutions GmbH CODESYS Control for Raspberry Pi containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS Control RTE V3 (for Beckhoff CX) containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS Control RTE V3 containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS Control V3 Runtime System Toolkit containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS Control Win V3 (also part of the CODESYS Development System setup) containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS HMI V3 containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS V3 Embedded Target Visu Toolkit containing the webserver CmpWebServer < 3.5.14.10 3S-Smart Software Solutions GmbH CODESYS V3 Remote Target Visu Toolkit containing the webserver CmpWebServer < 3.5.14.10
    affected: mitigation “3S-Smart Software Solutions GmbH has released Versions 3.5.12.80, 3.5.14.10, and 3.5.15.0 to resolve the vulnerabilities for the affected CODESYS products.” codesys.com

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

6.19% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/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 CODESYS V3 web server

Classification

Weakness

References

Sources

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.