---
id: CVE-2016-20048
title: >-
  iSelect 1.4.0-2+b1 contains a local buffer overflow vulnerability that allows
  local attackers to execute arbitrary code by supplying an oversized value to
  the -k/--key parameter
summary: >-
  iSelect 1.4.0-2+b1 contains a local buffer overflow vulnerability that allows
  local attackers to execute arbitrary code by supplying an oversized value to
  the -k/--key parameter. Attackers can craft a malicious argument containing a
  NOP …
severity: high
cvss: 8.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-22
published: '2026-03-28'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T08:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2016-20048'
references:
  - url: 'http://www.ossp.org/pkg/tool/iselect/'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/41076'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/iselect-2-b1-local-buffer-overflow-via-key-parameter
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00167
epssPercentile: 0.05373
ingestedAt: '2026-10-07T08:20:03.908Z'
---

## Overview

iSelect 1.4.0-2+b1 contains a local buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized value to the -k/--key parameter. Attackers can craft a malicious argument containing a NOP sled, shellcode, and return address to overflow a 1024-byte stack buffer and gain code execution with user privileges.

## Remediation

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