Home/CVE/3S-Smart Software Solutions GmbH CODESYS V3 OPC UA Server, all versions 3.5.11.0 to 3.5.15.0, allows an attacker to send
CVE

CVE-2019-13542

3S-Smart Software Solutions GmbH CODESYS V3 OPC UA Server, all versions 3.5.11.0 to 3.5.15.0, allows an attacker to send

3S-Smart Software Solutions GmbH CODESYS V3 OPC UA Server, all versions 3.5.11.0 to 3.5.15.0, allows an attacker to send crafted requests from a trusted OPC UA client that cause a NULL pointer dereference, which may trigger a denial-of-service condition.

MEDIUM · CVSS 6.5 EPSS 0.00156
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-476NULL Pointer Dereference
CWE-476NULL Pointer Dereference
▤

Affected Products & Versions

10
codesys control for beaglebone>= 3.5.11.0 and < 3.5.15.0
codesys control for empc-a\/imx6>= 3.5.11.0 and < 3.5.15.0
codesys control for iot2000>= 3.5.11.0 and < 3.5.15.0
codesys control for pfc100>= 3.5.11.0 and < 3.5.15.0
codesys control for pfc200>= 3.5.11.0 and < 3.5.15.0
codesys control for raspberry pi>= 3.5.11.0 and < 3.5.15.0
codesys control rte>= 3.5.11.0 and < 3.5.15.0
codesys control win>= 3.5.11.0 and < 3.5.15.0
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productcriticalLinux Reverse Shell Indicator
producthighCommunication To LocaltoNet Tunneling Service Initiated - Linux
producthighPotentially Suspicious Malware Callback Communication - Linux
producthighLinux Crypto Mining Pool Connections
producthighCommunication To Ngrok Tunneling Service - Linux
producthighLinux Crypto Mining Indicators
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · ics-cert@hq.dhs.gov
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Sep 2019 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

3
cisa-csafcisa-csaf-csaf_files-OT-white-2019-icsa-19-255-04
cisa-csafcisa-csaf-csaf_files-OT-white-2025-icsa-25-273-04
cisa-csafcisa-csaf-csaf_files-OT-white-2026-icsa-26-076-01
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.us-cert.gov/ics/advisories/icsa-19-255-04Third Party AdvisoryUS Government Resource
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