Buffer overflow in IBM Datapower Gateway 10.5.0

CVE-2026-16159

IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2 could allow a remote attacker to obtain sensitive information and cause a denial of service due to an out-of-bounds write.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-16159?
CVE-2026-16159 is a high-severity vulnerability in IBM Datapower Gateway 10.5.0, classified under Out-of-bounds Write. CVSS score: 8.6/10. Published 2026-10-08.
How severe is CVE-2026-16159?
High severity. CVSS v3 base score is 8.6 out of 10.