CVE-2021-45117
MEDIUMCVSS 6.5/10EPSS 1.40%
Last modified
CVE-2021-45117 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.. EPSS estimates a 1.40% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 | All versions |
| Siemens | Telecontrol Server Basic | 3.0 |
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdfPatch, Third Party Advisory
- https://www.youtube.com/watch?v=qv-RBdCaV4kExploit, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdfPatch, Third Party Advisory
- https://www.youtube.com/watch?v=qv-RBdCaV4kExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-45117?
The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.
How severe is CVE-2021-45117?
CVE-2021-45117 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.40% probability of exploitation in the next 30 days.
How do I fix CVE-2021-45117?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-45104An issue was discovered in HTCondor 9.0.x before 9.0.10 and …7.4
- CVE-2021-45105Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding …5.9
- CVE-2021-45106A vulnerability has been identified in SICAM TOOLBOX II (All…6.5
- CVE-2021-45111Improper access control in Odoo Community 15.0 and earlier a…8.1
- CVE-2021-45115An issue was discovered in Django 2.2 before 2.2.26, 3.2 bef…7.5
- CVE-2021-45116An issue was discovered in Django 2.2 before 2.2.26, 3.2 bef…7.5
- CVE-2021-45222An issue was discovered in COINS Construction Cloud 11.12. D…8.8
- CVE-2021-45223An issue was discovered in COINS Construction Cloud 11.12. D…6.5
- CVE-2021-45224An issue was discovered in COINS Construction Cloud 11.12. I…6.1
- CVE-2021-45225An issue was discovered in COINS Construction Cloud 11.12. D…6.1
- CVE-2021-45226An issue was discovered in COINS Construction Cloud 11.12. D…6.5
- CVE-2021-45227An issue was discovered in COINS Construction Cloud 11.12. D…5.4
Are you affected by CVE-2021-45117?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST