---
id: CVE-2026-88835
title: >-
  BusyBox dpkg read_package_field() steps past a NUL terminator on malformed
  .deb packages, causing an out-of-bounds heap read.
summary: >-
  BusyBox dpkg read_package_field() steps past a NUL terminator on malformed
  .deb packages, causing an out-of-bounds heap read.
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H'
cwe:
  - CWE-125
vendor: Red Hat
product: busybox
affected:
  - busybox (all versions)
published: '2026-09-23'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T19:17:58.527'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88835'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-88835'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2531349'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88835.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-88835'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88835'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00109
epssPercentile: 0.01104
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-25T18:14:56.514596Z'
ingestedAt: '2026-09-23T18:29:33.146Z'
---

## Overview

BusyBox dpkg read_package_field() steps past a NUL terminator on malformed .deb packages, causing an out-of-bounds heap read.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · 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-2026-88835.json)