---
id: CVE-2026-88832
title: >-
  BusyBox romfs volume ID parsing uses unbounded strlen on attacker-controlled
  metadata, causing a heap buffer overflow when processing crafted filesystem
  images.
summary: >-
  BusyBox romfs volume ID parsing uses unbounded strlen on attacker-controlled
  metadata, causing a heap buffer overflow when processing crafted filesystem
  images.
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
vendor: Red Hat
product: busybox-main
affected:
  - busybox-main (all versions)
published: '2026-09-23'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T23:16:54.570'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88832'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:72111'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-88832'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2531345'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88832.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-88832'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88832'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-23T17:31:57.802377Z'
epss: 0.0012
epssPercentile: 0.01619
ingestedAt: '2026-09-23T17:28:14.849Z'
patched:
  - hardened_images
---

## Overview

BusyBox romfs volume ID parsing uses unbounded strlen on attacker-controlled metadata, causing a heap buffer overflow when processing crafted filesystem images.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat Hardened Images · no fix planned: Red Hat Hardened Images · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88832.json)
- **RHSA-2026:72111** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:72111)