What is CVE-2026-17423?

CVE-2026-17423 is a high-severity vulnerability in IBM Aix, classified under Out-of-bounds Read. CVSS score: 7.7/10. Published 2026-08-20.

How severe is CVE-2026-17423?

High severity. CVSS v3 base score is 7.7 out of 10.

Out-of-bounds Read in IBM Aix

CVE-2026-17423

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to obtain sensitive information and cause a denial of service due to an out-of-bounds read.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Ibm Aix — versions 7.2, 7.3
Ibm Powervm Vios — versions 4.1

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-17423?: CVE-2026-17423 is a high-severity vulnerability in IBM Aix, classified under Out-of-bounds Read. CVSS score: 7.7/10. Published 2026-08-20.
How severe is CVE-2026-17423?: High severity. CVSS v3 base score is 7.7 out of 10.