CWE-416: Use After Free

ID CWE-416

Abstraction Variant

Structure Simple

Status Stable

Number of CVEs 4733

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Modes of Introduction

Phase	Note
Implementation

Applicable Platforms

Type	Class	Name	Prevalence
Language		C
Language		C++

Relationships

View			Weakness
# ID	View	Status	# ID	Name	Abstraction	Structure	Status
CWE-1000	Research Concepts	Draft	CWE-825	Expired Pointer Dereference	Base	Simple	Incomplete
CWE-1003	Weaknesses for Simplified Mapping of Published Vulnerabilities	Incomplete	CWE-672	Operation on a Resource after Expiration or Release	Class	Simple	Draft
CWE-1305	CISQ Quality Measures (2020)	Incomplete	CWE-672	Operation on a Resource after Expiration or Release	Class	Simple	Draft
CWE-1340	CISQ Data Protection Measures	Incomplete	CWE-672	Operation on a Resource after Expiration or Release	Class	Simple	Draft
CWE-1000	Research Concepts	Draft	CWE-120	Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')	Base	Simple	Incomplete
CWE-1000	Research Concepts	Draft	CWE-123	Write-what-where Condition	Base	Simple	Draft

CVEs Published

Based on CVE published date

CVSS Severity

CVSS Severity - By Year

CVSS Base Score

# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	Exploits	PoC	Pubblication Date	Modification Date
# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	PoC	Pubblication Date	Modification Date