CWE-127: Buffer Under-read

ID CWE-127

Abstraction Variant

Structure Simple

Status Draft

Number of CVEs 3

The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations prior to the targeted buffer.

This typically occurs when the pointer or its index is decremented to a position before the buffer, when pointer arithmetic results in a position before the beginning of the valid memory location, or when a negative index is used. This may result in exposure of sensitive information or possibly a crash.

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-125	Out-of-bounds Read	Base	Simple	Draft
CWE-1000	Research Concepts	Draft	CWE-786	Access of Memory Location Before Start of Buffer	Base	Simple	Incomplete

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