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CVE-2026-17476: CWE-787 Out-of-bounds Write

0
Medium
VulnerabilityCVE-2026-17476cvecve-2026-17476cwe-787
Published: 08/13/2026 (08/13/2026, 20:38:14 UTC)
Source: CVE Database V5
Vendor/Project: IBM

Description

CVE-2026-17476 is a medium severity vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6. It involves an out-of-bounds write (CWE-787) that could allow a remote attacker to cause a denial of service by improper buffer writing. No known exploits are reported in the wild, and no official patch or remediation guidance is currently available.

CVSS v3.1

Score 4.8medium

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Affected software

Affected versions
=7.6=7.5=7.4=7.3
CPE configurations (8)
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/13/2026, 21:12:53 UTC

Technical Analysis

This vulnerability affects IBM i operating system versions 7.3 through 7.6. It is classified as an out-of-bounds write (CWE-787), which means that the software improperly writes data outside the boundaries of allocated buffers. This flaw could be triggered remotely without authentication, potentially leading to a denial of service condition. The CVSS v3.1 base score is 4.8, indicating medium severity, with network attack vector, high attack complexity, no privileges required, no user interaction, and impact limited to integrity and availability. There is no vendor advisory or patch information provided at this time.

Potential Impact

An attacker could remotely exploit this vulnerability to cause a denial of service by triggering an improper buffer write. The impact does not include confidentiality loss but affects system integrity and availability. No known active exploitation has been reported.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM's security advisories for updates. No specific mitigation steps are provided by the vendor at this time.

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Technical Details

Data Version
5.2
Assigner Short Name
ibm
Date Reserved
2026-07-25T22:19:23.735Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a7e2fb1bf8831d539cb5c97

Added to database: 08/13/2026, 20:57:21 UTC

Last enriched: 08/13/2026, 21:12:53 UTC

Last updated: 08/13/2026, 23:07:29 UTC

Views: 3

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