---
id: CVE-2018-25356
title: >-
  SIPp 3.6 and earlier contains a local buffer overflow vulnerability in
  command-line argument handling that allows local attackers to crash the
  application or execute arbitrary code
summary: >-
  SIPp 3.6 and earlier contains a local buffer overflow vulnerability in
  command-line argument handling that allows local attackers to crash the
  application or execute arbitrary code. Attackers can trigger the vulnerability
  by supplying ov…
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-120
published: '2026-05-23'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T22:10:00.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2018-25356'
references:
  - url: 'http://sipp.sourceforge.net/'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/SIPp/sipp/releases'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/44962'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/sipp-local-buffer-overflow-via-command-line-arguments
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00162
epssPercentile: 0.04811
ingestedAt: '2026-10-06T22:23:15.925Z'
---

## Overview

SIPp 3.6 and earlier contains a local buffer overflow vulnerability in command-line argument handling that allows local attackers to crash the application or execute arbitrary code. Attackers can trigger the vulnerability by supplying oversized input to the -3pcc, -i, or -log_file parameters, causing strcpy to write beyond buffer boundaries in sipp.cpp.

## Remediation

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