CVE-2021-40142
Last modified
CVE-2021-40142 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer.. EPSS estimates a 2.56% chance of exploitation in the next 30 days.
Description
In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Opcfoundation | Local Discover Server | < 1.04.402.463 |
| Siemens | Simatic Process Historian Opc Ua Server Firmware | < 2022 |
| Siemens | Simatic Process Historian Opc Ua Server Firmware | 2022 |
| Siemens | Simatic Net Pc | 14 |
| Siemens | Simatic Net Pc | 15 |
| Siemens | Simatic Net Pc | 16 |
| Siemens | Simatic Net Pc | 17 |
| Siemens | Simatic Wincc | All versions |
| Siemens | Simatic Wincc Runtime | All versions |
| Siemens | Simatic Wincc Unified Scada Runtime | All versions |
| Siemens | Telecontrol Server Basic | 3.0 |
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-321292.pdfPatch, Third Party Advisory
- https://opcfoundation.org/security-bulletins/Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-321292.pdfPatch, Third Party Advisory
- https://opcfoundation.org/security-bulletins/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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