What is CVE-2026-18670?

CVE-2026-18670 is a high-severity vulnerability in IBM Aix, classified under Integer Overflow or Wraparound. CVSS score: 8.2/10. Published 2026-08-20.

How severe is CVE-2026-18670?

High severity. CVSS v3 base score is 8.2 out of 10.

Integer overflow in IBM Aix

CVE-2026-18670

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service and potentially disclose sensitive information due to an integer underflow.

Vulnerability class: Integer Overflow

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

Affected products

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

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

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

Frequently asked questions

What is CVE-2026-18670?: CVE-2026-18670 is a high-severity vulnerability in IBM Aix, classified under Integer Overflow or Wraparound. CVSS score: 8.2/10. Published 2026-08-20.
How severe is CVE-2026-18670?: High severity. CVSS v3 base score is 8.2 out of 10.