synced 1 MIN AGO
01 Record

CVE-2023-28831

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.

HighPUBLISHEDCNA: siemens
CNA base score8.7 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

02 Description

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.

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.12% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 66.2% of scored records. A rank, not a probability.
NVD base score
8.7 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-09-12 09:32Z3 YR AGO
Last updated
2025-11-11 20:20Z11 MO AGO
Reserved
2023-03-24
Assigning CNA
siemens
Record state
PUBLISHED
Severity
High (CVSS 8.7)
CNA CVSS vector
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
Weaknesses
  • CWE-190Integer Overflow or WraparoundBase
Data version
5.2
Document digest
04bcbd9351f5dd49e0c2e37edfe1f44eef3dd1407a1651c03e521ee8f065550e

05 Affected products

VendorProductVersionsPlatforms
SiemensSIMATIC BRAUMAT0 to < V8.1 SP1—
SiemensSIMATIC Cloud Connect 7 CC7120 to < V2.2—
SiemensSIMATIC Cloud Connect 7 CC7160 to < V2.2—
SiemensSIMATIC Comfort/Mobile RT0 to < *—
SiemensSIMATIC Drive Controller CPU 1504D TF0 to < V2.9.7, V3.0.1 to < V3.0.3—
SiemensSIMATIC Drive Controller CPU 1507D TF0 to < V2.9.7, V3.0.1 to < V3.0.3—
SiemensSIMATIC ET 200SP CPU 1510SP F-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC ET 200SP CPU 1510SP-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC ET 200SP CPU 1512SP F-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC ET 200SP CPU 1512SP-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC ET 200SP CPU 1514SP F-2 PN0 to < V3.0.3—
SiemensSIMATIC ET 200SP CPU 1514SP-2 PN0 to < V3.0.3—
SiemensSIMATIC ET 200SP CPU 1514SPT-2 PN0 to < V3.0.3—
SiemensSIMATIC IPC DiagMonitor0 to < *—
SiemensSIMATIC NET PC Software V140 to < *—
SiemensSIMATIC NET PC Software V160 to < V16 Update 8—
SiemensSIMATIC NET PC Software V170 to < V17 SP1 Update 1—
SiemensSIMATIC NET PC Software V180 to < V18 Update 1—
SiemensSIMATIC PCS 7 V9.10 to < V9.1 SP2 UC08—
SiemensSIMATIC PCS neo V4.00 to < *—
SiemensSIMATIC S7-1500 CPU 1511-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1511C-1 PN0 to < V2.9.7—
SiemensSIMATIC S7-1500 CPU 1511F-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1511T-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1511TF-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1512C-1 PN0 to < V2.9.7—
SiemensSIMATIC S7-1500 CPU 1513-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1513F-1 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1515-2 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1515F-2 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1515T-2 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1515TF-2 PN0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1516-3 PN/DP0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1516F-3 PN/DP0 to < V2.9.7, 0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1516T-3 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1516TF-3 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1517-3 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1517F-3 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1517T-3 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1517TF-3 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1518T-4 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-1500 CPU 1518TF-4 PN/DP0 to < V3.0.3—
SiemensSIMATIC S7-PLCSIM Advanced0 to < V5.0 Update 2—
SiemensSIMATIC SISTAR0 to < V8.1 SP1—
SiemensSIMATIC WinCC OA V3.170 to < V3.17 P029—
SiemensSIMATIC WinCC OA V3.180 to < V3.18 P019—

37 further entries not shown. The complete list is in the raw JSON document.

06 References