CVE-2026-17255

HighCVSS 7.5/10Last modified Sep 10, 2026

Description

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper validation of the prefix length in ICMPv6 Router Advertisements.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
IBM	i	7.6; 7.5; 7.4; 7.3

References

https://www.ibm.com/support/pages/node/7286093Patch, Vendor Advisory

Timeline

Published: Sep 4, 2026
Last modified: Sep 10, 2026
NVD status: Analyzed

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