CVEvulnerability
CVE-2021-45117
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2022-03-21
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-476
Description
The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.
Affected configurations
• opcfoundation ua-nodeset (< 1.05.01)
• siemens simatic net pc 14
• siemens simatic net pc 15
• siemens simatic net pc 16
• siemens simatic net pc 17
• siemens sitop manager
• siemens telecontrol server basic 3.0
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdf Patch, Third Party Advisory
- https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-45117.pdf Patch, Vendor Advisory
- https://www.youtube.com/watch?v=qv-RBdCaV4k Exploit, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdf Patch, Third Party Advisory
- https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-45117.pdf Patch, Vendor Advisory
- https://www.youtube.com/watch?v=qv-RBdCaV4k Exploit, Third Party Advisory