What is CVE-2026-16917?

CVE-2026-16917 is a critical-severity vulnerability in IBM Aix, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2026-08-19.

How severe is CVE-2026-16917?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Integer overflow in IBM Aix

CVE-2026-16917

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to an integer overflow.

Vulnerability class: Integer Overflow

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

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

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

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

Frequently asked questions

What is CVE-2026-16917?: CVE-2026-16917 is a critical-severity vulnerability in IBM Aix, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2026-08-19.
How severe is CVE-2026-16917?: Critical severity. CVSS v3 base score is 9.8 out of 10.