Weakness · Medium

CWE-1109: Use of Same Variable for Multiple Purposes

What it is

The code contains a callable, block, or other code element in which the same variable is used to control more than one unique task or store more than one instance of data.

MITRE CWE 4.19.1

Severity (our rating)
Medium
Likelihood of exploit
Not rated by MITRE
Introduced during
Implementation
Exploited in the wild
No CVE in CISA's catalog

What an attacker can do

  • Reduce Maintainability (Other)
  • Increase Analytical Complexity (Other)

How to prevent it

MITRE lists no specific mitigation for this weakness. Treat it like its parent weaknesses below: validate input, keep the design simple and review the code where it could appear.

CWE-1109 on MITRE's CWE site

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Source: MITRE Common Weakness Enumeration, CWE version 4.19.1. CWE is a trademark of The MITRE Corporation.