CVE-2019-13946

Profinet-IO (PNIO) stack versions prior V06.00 do not properly limit internal resource allocation when multiple legitimate diagnostic package requests are sent to the DCE-RPC interface. This could lead to a denial of service condition due to lack of memory for devices that include a vulnerable version of the stack. The security vulnerability could be exploited by an attacker with network access to an affected device. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise the availability of the device.

Published: 2020-02-11 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-13946 is rated Moderate Risk (55/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.41%). 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-2019-13946

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 2026-06-15 0.55% 1.41% +0.86%
2 2025-11-21 0.37% 0.55% +0.18%
3 2025-11-18 — 0.37% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-13946

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/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:N)
No account or special rights needed—anonymous or random user is enough.
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.
 3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/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:N)
No account or special rights needed—anonymous or random user is enough.
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.
 3.9 3.6 [email protected]
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C 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:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2019-13946

Affected software / configurations for CVE-2019-13946

Vendor Product Version Raw CPE
siemens dk_standard_ethernet_controller — cpe:2.3:a:siemens:dk_standard_ethernet_controller:*:*:*:*:*:*:*:*
siemens profinet_driver < 2.1 cpe:2.3:a:siemens:profinet_driver:*:*:*:*:*:*:*:*
siemens simatic_ipc_support — cpe:2.3:a:siemens:simatic_ipc_support:*:*:*:*:*:*:*:*
siemens ek-ertec_200_firmware < 4.5 cpe:2.3:o:siemens:ek-ertec_200_firmware:*:*:*:*:*:*:*:*
siemens ek-ertec_200p_firmware < 4.6 cpe:2.3:o:siemens:ek-ertec_200p_firmware:*:*:*:*:*:*:*:*
siemens ruggedcom_rm1224_firmware < 4.3 cpe:2.3:o:siemens:ruggedcom_rm1224_firmware:*:*:*:*:*:*:*:*
siemens scalance_m-800_firmware < 4.3 cpe:2.3:o:siemens:scalance_m-800_firmware:*:*:*:*:*:*:*:*
siemens scalance_s615_firmware < 4.3 cpe:2.3:o:siemens:scalance_s615_firmware:*:*:*:*:*:*:*:*
siemens scalance_w700_ieee_802.11n_firmware <= 6.0.1 cpe:2.3:o:siemens:scalance_w700_ieee_802.11n_firmware:*:*:*:*:*:*:*:*
siemens scalance_xc-200_firmware — cpe:2.3:o:siemens:scalance_xc-200_firmware:*:*:*:*:*:*:*:*
siemens scalance_xf-200_firmware — cpe:2.3:o:siemens:scalance_xf-200_firmware:*:*:*:*:*:*:*:*
siemens scalance_xp-200_firmware — cpe:2.3:o:siemens:scalance_xp-200_firmware:*:*:*:*:*:*:*:*
siemens scalance_xb-200_firmware — cpe:2.3:o:siemens:scalance_xb-200_firmware:*:*:*:*:*:*:*:*
siemens scalance_x-200irt_firmware < 5.3 cpe:2.3:o:siemens:scalance_x-200irt_firmware:*:*:*:*:*:*:*:*
siemens scalance_xr-300wg_firmware < 3.0 cpe:2.3:o:siemens:scalance_xr-300wg_firmware:*:*:*:*:*:*:*:*
siemens scalance_x-300_firmware — cpe:2.3:o:siemens:scalance_x-300_firmware:*:*:*:*:*:*:*:*
siemens scalance_xb-200_firmware < 3.0 cpe:2.3:o:siemens:scalance_xb-200_firmware:*:*:*:*:*:*:*:*
siemens scalance_xc-200_firmware < 3.0 cpe:2.3:o:siemens:scalance_xc-200_firmware:*:*:*:*:*:*:*:*
siemens scalance_xp-200_firmware < 3.0 cpe:2.3:o:siemens:scalance_xp-200_firmware:*:*:*:*:*:*:*:*
siemens scalance_xf-200ba_firmware < 3.0 cpe:2.3:o:siemens:scalance_xf-200ba_firmware:*:*:*:*:*:*:*:*
siemens scalance_x-400_firmware < 6.0 cpe:2.3:o:siemens:scalance_x-400_firmware:*:*:*:*:*:*:*:*
siemens scalance_xm-400_firmware < 6.0 cpe:2.3:o:siemens:scalance_xm-400_firmware:*:*:*:*:*:*:*:*
siemens scalance_xr524_firmware < 6.0 cpe:2.3:o:siemens:scalance_xr524_firmware:*:*:*:*:*:*:*:*
siemens scalance_xr526_firmware < 6.0 cpe:2.3:o:siemens:scalance_xr526_firmware:*:*:*:*:*:*:*:*
siemens scalance_xr528_firmware < 6.0 cpe:2.3:o:siemens:scalance_xr528_firmware:*:*:*:*:*:*:*:*
siemens scalance_xr552_firmware < 6.0 cpe:2.3:o:siemens:scalance_xr552_firmware:*:*:*:*:*:*:*:*
siemens simatic_cp_1616_firmware < 2.8 cpe:2.3:o:siemens:simatic_cp_1616_firmware:*:*:*:*:*:*:*:*
siemens simatic_cp_1604_firmware < 2.8 cpe:2.3:o:siemens:simatic_cp_1604_firmware:*:*:*:*:*:*:*:*
siemens simatic_cp_343-1_firmware — cpe:2.3:o:siemens:simatic_cp_343-1_firmware:*:*:*:*:*:*:*:*
siemens simatic_cp_343-1_advanced_firmware — cpe:2.3:o:siemens:simatic_cp_343-1_advanced_firmware:*:*:*:*:*:*:*:*
siemens simatic_cp_343-1_erpc_firmware — cpe:2.3:o:siemens:simatic_cp_343-1_erpc_firmware:*:*:*:*:*:*:*:*
siemens simatic_cp_343-1_lean_firmware — cpe:2.3:o:siemens:simatic_cp_343-1_lean_firmware:*:*:*:*:*:*:*:*
siemens simatic_cp_443-1_firmware — cpe:2.3:o:siemens:simatic_cp_443-1_firmware:*:*:*:*:*:*:*:*
siemens simatic_cp_443-1_advanced_firmware — cpe:2.3:o:siemens:simatic_cp_443-1_advanced_firmware:*:*:*:*:*:*:*:*
siemens simatic_cp_443-1_opc_ua_firmware — cpe:2.3:o:siemens:simatic_cp_443-1_opc_ua_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200al_im_157-1_pn_firmware — cpe:2.3:o:siemens:simatic_et200al_im_157-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200m_im153-4_pn_io_hf_firmware — cpe:2.3:o:siemens:simatic_et200m_im153-4_pn_io_hf_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200m_im153-4_pn_io_st_firmware — cpe:2.3:o:siemens:simatic_et200m_im153-4_pn_io_st_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200mp_im155-5_pn_hf_firmware < 4.2.0 cpe:2.3:o:siemens:simatic_et200mp_im155-5_pn_hf_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200mp_im155-5_pn_st_firmware < 4.1.0 cpe:2.3:o:siemens:simatic_et200mp_im155-5_pn_st_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200s_firmware — cpe:2.3:o:siemens:simatic_et200s_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200sp_im155-6_pn_basic_firmware — cpe:2.3:o:siemens:simatic_et200sp_im155-6_pn_basic_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200sp_im155-6_pn_hf_firmware < 3.3.1 cpe:2.3:o:siemens:simatic_et200sp_im155-6_pn_hf_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200sp_im155-6_pn_st_firmware < 4.1.0 cpe:2.3:o:siemens:simatic_et200sp_im155-6_pn_st_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200ecopn_firmware — cpe:2.3:o:siemens:simatic_et200ecopn_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200pro_firmware — cpe:2.3:o:siemens:simatic_et200pro_firmware:*:*:*:*:*:*:*:*
siemens im_154-3_pn_hf_firmware — cpe:2.3:o:siemens:im_154-3_pn_hf_firmware:*:*:*:*:*:*:*:*
siemens im_154-4_pn_hf_firmware — cpe:2.3:o:siemens:im_154-4_pn_hf_firmware:*:*:*:*:*:*:*:*
siemens simatic_mv440_firmware — cpe:2.3:o:siemens:simatic_mv440_firmware:*:*:*:*:*:*:*:*
siemens simatic_mv420_firmware — cpe:2.3:o:siemens:simatic_mv420_firmware:*:*:*:*:*:*:*:*
siemens simatic_pn\/pn_coupler_firmware — cpe:2.3:o:siemens:simatic_pn\/pn_coupler_firmware:*:*:*:*:*:*:*:*
siemens simatic_rf180c_firmware — cpe:2.3:o:siemens:simatic_rf180c_firmware:*:*:*:*:*:*:*:*
siemens simatic_rf182c_firmware — cpe:2.3:o:siemens:simatic_rf182c_firmware:*:*:*:*:*:*:*:*
siemens simatic_rf600_firmware < 3.0 cpe:2.3:o:siemens:simatic_rf600_firmware:*:*:*:*:*:*:*:*
siemens sinamics_dcp_firmware < 1.3 cpe:2.3:o:siemens:sinamics_dcp_firmware:*:*:*:*:*:*:*:*

References for CVE-2019-13946

cvelogic Threat Intelligence