Authenticated service interruption via off-by-one queue-name write
Published Sep 4, 2026 · Updated Sep 4, 2026
Off-by-one write in the LPD service on IBMi 7.3 through 7.6 allows local users to interrupt service through a crafted queue name. The LPD queue-name parser writes one byte beyond the intended buffer boundary while processing the attacker-controlled name. An authenticated local session is required, and IBM reports denial of service without data disclosure or modification.
Summary
What happened
Off-by-one write in the LPD service on IBMi 7.3 through 7.6 allows local users to interrupt service through a crafted queue name. The LPD queue-name parser writes one byte beyond the intended buffer boundary while processing the attacker-controlled name. An authenticated local session is required, and IBM reports denial of service without data disclosure or modification.
The record
- CVE
- CVE-2026-17469
- Published
- Sep 4, 2026
- Updated
- Sep 4, 2026
- Vendor
- IBM
- Product
- IBM i
- Classifications
- CWE-787, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 4, 2026CVE publishedPublication date reported by the CVE source.
- Sep 4, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.3
- Affected versionversion=7.4
- Affected versionversion=7.5
- Affected versionversion=7.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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