NULL pointer dereference in Opcfoundation Ua-Nodeset
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.014 (72.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Opcfoundation Ua-Nodeset
- Siemens Simatic Net Pc — versions 14, 15, 16
- Siemens Sitop Manager
- Siemens Telecontrol Server Basic — versions 3.0
Weakness classification (CWE)
References
- www.youtube.com/watch (Exploit, Third Party Advisory)
- files.opcfoundation.org/SecurityBulletins/OPC Foundation Security Bulletin CVE-… (Patch, Vendor Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-285795.pdf (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-45117?
- CVE-2021-45117 is a medium-severity vulnerability in Opcfoundation Ua-Nodeset, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2022-03-21.
- How severe is CVE-2021-45117?
- Medium severity. CVSS v3 base score is 6.5 out of 10.