Heap Buffer Overflow in Android Bootloader

Publication date: 2026-09-08

Last updated on: 2026-09-23

Assigner: Android (associated with Google Inc. or Open Handset Alliance)

Description

In read_boot_region of fsck.c, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-08

Last Modified

2026-09-23

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-45531

Affected Vendors & Products

Vendor	Product	Version / Range
google	android	14.0
google	android	15.0
google	android	16.0
google	android	16.0
google	android	17.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

This vulnerability is a heap buffer overflow in the read_boot_region function of fsck.c. It allows an out of bounds read, which could lead to local privilege escalation without needing extra execution privileges or user interaction.

Impact Analysis

An attacker could exploit this to gain higher privileges on your system, potentially allowing them to take control of your device or access sensitive data. No user interaction or additional permissions are required for exploitation.

Mitigation Strategies

Apply the latest security patches from the Android security bulletin for the affected component. Monitor official Android security advisories for updates related to fsck.c and heap buffer overflow fixes.

Hi! I’m here to help you understand CVE-2026-45531. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70