CVE-2023-46156

Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a denial of service condition. A restart is needed to restore normal operations.

Published: 2023-12-12 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-46156 is rated Moderate Risk (54/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.24%). EPSS rose +1.20% over the last day, indicating growing attacker interest. 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-2023-46156

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 0.04% 1.24% +1.20%
2 2025-11-21 0.18% 0.04% -0.14%
3 2025-11-18 — 0.18% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-46156

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]

Weakness enumeration for CVE-2023-46156

Affected software / configurations for CVE-2023-46156

Vendor Product Version Raw CPE
siemens simatic_drive_controller_cpu_1504d_tf_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_drive_controller_cpu_1504d_tf_firmware:*:*:*:*:*:*:*:*
siemens simatic_drive_controller_cpu_1507d_tf_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_drive_controller_cpu_1507d_tf_firmware:*:*:*:*:*:*:*:*
siemens simatic_et_200sp_open_control_1515sp_pc2_firmware — cpe:2.3:o:siemens:simatic_et_200sp_open_control_1515sp_pc2_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1510sp_f-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1510sp_f-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1510sp-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1510sp-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1511-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1511c-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511c-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1511f-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511f-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1511t-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511t-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1511tf-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511tf-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1512c-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1512c-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1512sp_f-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1512sp_f-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1512sp-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1512sp-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1513-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1513-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1513f-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1513f-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1513r-1_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1513r-1_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1514sp_f-2_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1514sp_f-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1514sp-2_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1514sp-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1514spt_f-2_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1514spt_f-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1514spt-2_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1514spt-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1515-2_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1515f-2_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515f-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1515r-2_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515r-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1515t-2_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515t-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1515tf-2_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515tf-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1516-3_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516-3_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1516f-3_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516f-3_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1516t-3_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516t-3_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1517-3_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517-3_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1517f-3_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517f-3_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1517h-3_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517h-3_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1517t-3_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517t-3_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1517tf-3_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517tf-3_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1518-4_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518-4_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1518f-4_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518f-4_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1518hf-4_pn_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518hf-4_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1518t-4_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518t-4_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_1518tf-4_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518tf-4_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_s7-1518-4_pn\/dp_odk_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_s7-1518-4_pn\/dp_odk_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_cpu_s7-1518f-4_pn\/dp_odk_firmware < 3.1.0 cpe:2.3:o:siemens:simatic_s7-1500_cpu_s7-1518f-4_pn\/dp_odk_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_et_200pro:_cpu_1513pro_f-2_pn_firmware — cpe:2.3:o:siemens:simatic_s7-1500_et_200pro\:_cpu_1513pro_f-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_et_200pro:_cpu_1513pro-2_pn_firmware — cpe:2.3:o:siemens:simatic_s7-1500_et_200pro\:_cpu_1513pro-2_pn_firmware:-:*:*:*:*:*:*:*
siemens simatic_s7-1500_et_200pro:_cpu_1516pro_f-2_pn_firmware — cpe:2.3:o:siemens:simatic_s7-1500_et_200pro\:_cpu_1516pro_f-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_et_200pro:cpu_1516pro-2_pn_firmware — cpe:2.3:o:siemens:simatic_s7-1500_et_200pro\:cpu_1516pro-2_pn_firmware:*:*:*:*:*:*:*:*
siemens simatic_s7-1500_software_controller_firmware — cpe:2.3:o:siemens:simatic_s7-1500_software_controller_firmware:-:*:*:*:*:*:*:*
siemens simatic_s7-plcsim_advanced_firmware < 6.0 cpe:2.3:o:siemens:simatic_s7-plcsim_advanced_firmware:*:*:*:*:*:*:*:*
siemens siplus_et_200sp_cpu_1510sp_f-1_pn_firmware — cpe:2.3:o:siemens:siplus_et_200sp_cpu_1510sp_f-1_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_et_200sp_cpu_1510sp_f-1_pn_rail_firmware — cpe:2.3:o:siemens:siplus_et_200sp_cpu_1510sp_f-1_pn_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_et_200sp_cpu_1510sp-1_pn_firmware — cpe:2.3:o:siemens:siplus_et_200sp_cpu_1510sp-1_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_et_200sp_cpu_1510sp-1_pn_rail_firmware — cpe:2.3:o:siemens:siplus_et_200sp_cpu_1510sp-1_pn_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_et_200sp_1512sp_f-1_pn_firmware — cpe:2.3:o:siemens:siplus_et_200sp_1512sp_f-1_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_et_200sp_cpu_1512sp_f-1_pn_rail_firmware — cpe:2.3:o:siemens:siplus_et_200sp_cpu_1512sp_f-1_pn_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_et_200sp_cpu_1512sp-1_pn_firmware — cpe:2.3:o:siemens:siplus_et_200sp_cpu_1512sp-1_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_et_200sp_cpu_1512sp-1_pn_rail_firmware — cpe:2.3:o:siemens:siplus_et_200sp_cpu_1512sp-1_pn_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1511-1_pn_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1511-1_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1511-1_pn_t1_rail_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1511-1_pn_t1_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1511-1_pn_tx_rail_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1511-1_pn_tx_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1511f-1_pn_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1511f-1_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1513-1_pn_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1513-1_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1513f-1_pn_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1513f-1_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1515f-2_pn_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1515f-2_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1515f-2_pn_rail_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1515f-2_pn_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1515f-2_pn_t2_rail_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1515f-2_pn_t2_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1515r-2_pn_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1515r-2_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1515r-2_pn_tx_rail_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1515r-2_pn_tx_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1516-3_pn\/dp_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1516-3_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1516-3_pn\/dp_tx_rail_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1516-3_pn\/dp_tx_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1516f-3_pn\/dp_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1516f-3_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1516f-3_pn\/dp_rail_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1516f-3_pn\/dp_rail_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1517h-3_pn_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1517h-3_pn_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1518-4_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:siplus_s7-1500_cpu_1518-4_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware < 3.1.0 cpe:2.3:o:siemens:siplus_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1518f-4_pn\/dp_firmware < 3.1.0 cpe:2.3:o:siemens:siplus_s7-1500_cpu_1518f-4_pn\/dp_firmware:*:*:*:*:*:*:*:*
siemens siplus_s7-1500_cpu_1518hf-4_pn_firmware — cpe:2.3:o:siemens:siplus_s7-1500_cpu_1518hf-4_pn_firmware:*:*:*:*:*:*:*:*
siemens sinumerik_mc_firmware — cpe:2.3:o:siemens:sinumerik_mc_firmware:*:*:*:*:*:*:*:*
siemens sinumerik_one_firmware — cpe:2.3:o:siemens:sinumerik_one_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-46156

cvelogic Threat Intelligence