CVE-2026-17470: IBM i is Affected By Denial of Service Vulnerabilities in Line Printer Daemon [, ]
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to a buffer overflow.
Other sources
IBM i could allow a remote attacker to cause a denial of service due to a buffer overflow.
— IBM
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
IBM i 7.6to a version that resolves this vulnerability.Fixed in 7.6Patch SJ11300 - Upgrade
Upgrade
IBM i 7.5to a version that resolves this vulnerability.Fixed in 7.5Patch SJ11301 - Upgrade
Upgrade
IBM i 7.4to a version that resolves this vulnerability.Fixed in 7.4Patch SJ11302 - Upgrade
Upgrade
IBM i 7.3to a version that resolves this vulnerability.Fixed in 7.3Patch SJ11303
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
The issue is remotely exploitable and requires no privileges or user interaction. An attacker would need network reachability to the affected Line Printer Daemon service.
What is the known impact of successful exploitation?
Successful exploitation can cause a denial of service. The provided information does not indicate confidentiality or integrity impact.
Which IBM i releases are identified as affected?
IBM i 7.3, 7.4, 7.5, and 7.6 are identified as affected.