---
id: CVE-2026-93888
title: 'IBM Sterling Connect:Direct for Unix Buffer Overflow'
summary: "IBM Sterling Connect Direct for Unix 6.4.0.0 through 6.4.0.6 and 6.3.0.0 through 6.3.0.7 apnotify utility\_is vulnerable to a code injection due to insufficient validation of user input."
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-121
vendor: IBM
product: Sterling Connect Direct for Unix
affected:
  - sterling_connect_direct_for_unix >= 6.4.0.0 <= 6.4.0.6
  - sterling_connect_direct_for_unix >= 6.3.0.0 <= 6.3.0.7
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:39:48.421Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-93888'
references:
  - url: 'https://www.ibm.com/support/pages/node/7292127'
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.694Z'
---

## Overview

IBM Sterling Connect Direct for Unix 6.4.0.0 through 6.4.0.6 and 6.3.0.0 through 6.3.0.7 apnotify utility is vulnerable to a code injection due to insufficient validation of user input.

## Affected

- `sterling_connect_direct_for_unix >= 6.4.0.0 <= 6.4.0.6`
- `sterling_connect_direct_for_unix >= 6.3.0.0 <= 6.3.0.7`

## Remediation

IBM strongly recommends addressing the vulnerability now by upgrading

ProductVersionRemediation/Fix/InstructionsIBM Sterling Connect:Direct for Unix6.4.0.0 - 6.4.0.6.iFix021Apply 6.4.0.6.iFix022, included in 6.4.0.6.iFix025 available on  Fix Central https://www.ibm.com/support/fixcentral/swg/selectFixes .IBM Sterling Connect:Direct for Unix6.3.0.0 - 6.3.0.7.iFix032Apply 6.3.0.7.iFix033, available on  Fix Central https://www.ibm.com/support/fixcentral/swg/selectFixes .