---
id: CVE-2022-30065
title: >-
  A use-after-free in Busybox 1.35-x's awk applet leads to denial of service and
  possibly code execution when processing a crafted awk pattern in the copyvar
  function.
summary: >-
  A use-after-free in Busybox 1.35-x's awk applet leads to denial of service and
  possibly code execution when processing a crafted awk pattern in the copyvar
  function.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
  - CWE-416
vendor: busybox
product: busybox
affected:
  - busybox = 1.35.0
  - scalance_sc622-2c_firmware < 3.0
  - scalance_sc626-2c_firmware < 3.0
  - scalance_sc632-2c_firmware < 3.0
  - scalance_sc636-2c_firmware < 3.0
  - scalance_sc642-2c_firmware < 3.0
  - scalance_sc646-2c_firmware < 3.0
patched:
  - scalance_sc622-2c_firmware 3.0
  - scalance_sc626-2c_firmware 3.0
  - scalance_sc632-2c_firmware 3.0
  - scalance_sc636-2c_firmware 3.0
  - scalance_sc642-2c_firmware 3.0
  - scalance_sc646-2c_firmware 3.0
published: '2022-05-18'
updated: '2026-07-07'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-30065'
references:
  - url: 'https://bugs.busybox.net/show_bug.cgi?id=14781'
    label: cve@mitre.org
  - url: 'https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf'
    label: cve@mitre.org
  - url: 'https://bugs.busybox.net/show_bug.cgi?id=14781'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01254
epssPercentile: 0.68201
ingestedAt: '2026-07-07T19:42:41.416Z'
---

## Overview

A use-after-free in Busybox 1.35-x's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the copyvar function.

## Affected

- `busybox = 1.35.0`
- `scalance_sc622-2c_firmware < 3.0`
- `scalance_sc626-2c_firmware < 3.0`
- `scalance_sc632-2c_firmware < 3.0`
- `scalance_sc636-2c_firmware < 3.0`
- `scalance_sc642-2c_firmware < 3.0`
- `scalance_sc646-2c_firmware < 3.0`

## Remediation

Upgrade past the affected range:

- `scalance_sc622-2c_firmware 3.0`
- `scalance_sc626-2c_firmware 3.0`
- `scalance_sc632-2c_firmware 3.0`
- `scalance_sc636-2c_firmware 3.0`
- `scalance_sc642-2c_firmware 3.0`
- `scalance_sc646-2c_firmware 3.0`