CVE-2023-28831

8.7 highEPSS 1.1%

High (8.7) in siemens. EPSS 1.1% chance of exploitation in the next 30 days.

The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could cause the application to run into an infinite loop during certificate validation. This could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.

Severity

CVSS 4.0

8.7 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-31)
CWE: CWE-190
Published: 2023-09-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

siemens:simatic_cloud_connect_7_cc712_firmware
siemens:simatic_cloud_connect_7_cc716_firmware
siemens:simatic_drive_controller_cpu_1504d_tf_firmware
siemens:simatic_drive_controller_cpu_1507d_tf_firmware
siemens:simatic_et_200sp_open_controller_cpu_firmware
siemens:simatic_s7-1200_cpu_firmware
siemens:simatic_s7-1500_cpu_1510sp-1_pn_firmware
siemens:simatic_s7-1500_cpu_1510sp_f-1_pn_firmware
siemens:simatic_s7-1500_cpu_1511-1_pn_firmware
siemens:simatic_s7-1500_cpu_1511c-1_pn_firmware
siemens:simatic_s7-1500_cpu_1511f-1_pn_firmware
siemens:simatic_s7-1500_cpu_1511t-1_pn_firmware
siemens:simatic_s7-1500_cpu_1511tf-1_pn_firmware
siemens:simatic_s7-1500_cpu_1512c-1_pn_firmware
siemens:simatic_s7-1500_cpu_1512sp-1_pn_firmware
siemens:simatic_s7-1500_cpu_1512sp_f-1_pn_firmware
siemens:simatic_s7-1500_cpu_1513-1_pn_firmware
siemens:simatic_s7-1500_cpu_1513f-1_pn_firmware
siemens:simatic_s7-1500_cpu_1513r-1_pn_firmware
siemens:simatic_s7-1500_cpu_1514sp-2_pn_firmware
siemens:simatic_s7-1500_cpu_1514sp_f-2_pn_firmware
siemens:simatic_s7-1500_cpu_1514spt-2_pn_firmware
siemens:simatic_s7-1500_cpu_1514spt_f-2_pn_firmware
siemens:simatic_s7-1500_cpu_1515-2_pn_firmware
siemens:simatic_s7-1500_cpu_1515f-2_pn_firmware
siemens:simatic_s7-1500_cpu_1515r-2_pn_firmware
siemens:simatic_s7-1500_cpu_1515t-2_pn_firmware
siemens:simatic_s7-1500_cpu_1515tf-2_pn_firmware
siemens:simatic_s7-1500_cpu_1516-3_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1516f-3_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1516t-3_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1516tf-3_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1517-3_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1517f-3_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1517h-3_pn_firmware
siemens:simatic_s7-1500_cpu_1517t-3_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1517tf-3_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1518-4_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware
siemens:simatic_s7-1500_cpu_1518f-4_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1518f-4_pn\/dp_mfp_firmware
siemens:simatic_s7-1500_cpu_1518hf-4_pn_firmware
siemens:simatic_s7-1500_cpu_1518t-4_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_1518tf-4_pn\/dp_firmware
siemens:simatic_s7-1500_cpu_s7-1518-4_pn\/dp_odk_firmware
siemens:simatic_s7-1500_cpu_s7-1518f-4_pn\/dp_odk_firmware
siemens:simatic_s7-1500_et_200pro_firmware
siemens:simatic_s7-1500_software_controller_firmware
siemens:simatic_s7-plcsim_advanced_firmware
siemens:siplus_et_200sp_cpu_1510sp-1_pn_firmware

References

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