CWE-467: Use of sizeof() on a Pointer Type
low-riskThe code calls sizeof() on a pointer type, which can be an incorrect calculation if the programmer intended to determine the size of the data that is being pointed to.
Abstraction: Variant
Common Consequences
Integrity
→
Modify Memory
Detection Methods
Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
Real-World Examples (3)
| CVE | CVSS | EPSS | KEV |
|---|---|---|---|
| CVE-2020-1638 | 7.5 | 0.4% | — |
| CVE-2025-33132 | 6.5 | 0.0% | — |
| CVE-2021-47456 | 8.4 | 0.0% | — |
0
/ 100
low-risk
Active Threat
0/50 · Minimal
Exploit Availability
0/50 · Minimal