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.
EPSS: 0.014 (69.4th percentile) — read the EPSS interpretation.
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.
Affected products
- Opcfoundation Ua-nodeset
- Siemens Simatic_net_pc — versions 14, 15, 16
- Siemens Sitop_manager
- Siemens Telecontrol_server_basic — versions 3.0
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM, 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.