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 crafted requests from a trusted OPC UA client that cause a NULL pointer dereference, which may trigger a denial-of-service condition.

Published: 2019-09-17 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-13542 is rated Moderate Risk (42.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.24%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-13542

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-07-19 0.39% 0.24% -0.15%
2 2025-03-30 0.52% 0.39% -0.13%
3 2025-03-29 — 0.52% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-13542

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2019-13542

Affected software / configurations for CVE-2019-13542

Vendor Product Version Raw CPE
codesys control_for_beaglebone >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:control_for_beaglebone:*:*:*:*:*:*:*:*
codesys control_for_empc-a\/imx6 >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:control_for_empc-a\/imx6:*:*:*:*:*:*:*:*
codesys control_for_iot2000 >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:control_for_iot2000:*:*:*:*:*:*:*:*
codesys control_for_pfc100 >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:control_for_pfc100:*:*:*:*:*:*:*:*
codesys control_for_pfc200 >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:control_for_pfc200:*:*:*:*:*:*:*:*
codesys control_for_raspberry_pi >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:control_for_raspberry_pi:*:*:*:*:*:*:*:*
codesys control_rte >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:control_rte:*:*:*:*:*:*:*:*
codesys control_win >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:control_win:*:*:*:*:*:*:*:*
codesys linux >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:linux:*:*:*:*:*:*:*:*
codesys runtime_system_toolkit >= 3.5.11.0, < 3.5.15.0 cpe:2.3:a:codesys:runtime_system_toolkit:*:*:*:*:*:*:*:*

References for CVE-2019-13542

URL Tags
https://www.us-cert.gov/ics/advisories/icsa-19-255-04 Third Party Advisory US Government Resource
cvelogic Threat Intelligence