VulnerabilityModified
CVE-2021-45117
The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases.
MEDIUM 6.5EPSS 1.42%
Does this matter?
Lower severity and a low EPSS score (1.42%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 1.42% probability · 71th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- opcfoundation/ua-nodeset · siemens/simatic net pc · siemens/sitop manager · siemens/telecontrol server basic
- Source
- cve@mitre.org
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdfPatch, Third Party Advisory
- https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-45117.pdfPatch, Vendor 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://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-45117.pdfPatch, Vendor Advisory
- https://www.youtube.com/watch?v=qv-RBdCaV4kExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.