CVE-2026-17469: CWE-787 Out-of-bounds Write
Description
CVE-2026-17469 is an off-by-one out-of-bounds write vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6. It affects the LPD queue name parser and can be exploited by a local authenticated attacker to cause a denial of service. The vulnerability does not impact confidentiality or integrity but can disrupt availability.
CVSS v3.1
Score 5.3medium
Affected software
IBM
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:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-787) exists in IBM i versions 7.3 through 7.6 due to an off-by-one write error in the LPD queue name parser. A local attacker with authentication can trigger this flaw to cause a denial of service condition by corrupting memory beyond the intended buffer boundary. The CVSS 3.1 base score is 5.3, reflecting a medium severity with network attack vector but requiring no privileges or user interaction. There is no indication of confidentiality or integrity impact.
Potential Impact
The impact is limited to denial of service, which can disrupt system availability. There is no reported impact on confidentiality or integrity. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links or official fixes are provided, users should monitor IBM security advisories for updates. In the meantime, limit local authenticated access to trusted users to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-25T20:50:08.481Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9af764acd9273b49e77910
Added to database: 09/04/2026, 16:52:52 UTC
Last enriched: 09/15/2026, 00:54:48 UTC
Last updated: 10/19/2026, 06:48:15 UTC
Views: 69
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