CWE-1276: Hardware Child Block Incorrectly Connected to Parent System
Signals between a hardware IP and the parent system design are incorrectly connected causing security risks.
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Overview
Individual hardware IP must communicate with the parent system in order for the product to function correctly and as intended. If implemented incorrectly, while not causing any apparent functional issues, may cause security issues. For example, if the IP should only be reset by a system-wide hard reset, but instead the reset input is connected to a software-triggered debug mode reset (which is also asserted during a hard reset), integrity of data inside the IP can be violated.
Real-world CVEs
1 recorded CVEs are caused by CWE-1276 (Hardware Child Block Incorrectly Connected to Parent System). The highest-severity and most recent are shown first. 1 new CWE-1276 CVE has been recorded so far in 2026.
Common consequences
What can happen when CWE-1276 is exploited.
Varies by Context
Affects: Confidentiality, Integrity, Availability
How it happens
When it is introduced
Typically introduced during these phases of the software lifecycle.