CVE-2023-28831

high

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. This could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.

References

https://securelist.com/vulnerability-report-q1-2024/112554/

https://cert-portal.siemens.com/productcert/pdf/ssa-711309.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-118850.pdf

https://cert-portal.siemens.com/productcert/html/ssa-711309.html

https://cert-portal.siemens.com/productcert/html/ssa-118850.html

Details

Source: Mitre, NVD

Published: 2023-09-12

Updated: 2025-08-18

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

CVSS v4

Base Score: 8.7

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

Severity: High

EPSS

EPSS: 0.00228