Vulnerability in IBM Datapower Gateway 10.5.0

CVE-2026-13257

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 an authenticated user to forge signature requests due to improper verification of data authenticity.

Published .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

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-2026-13257?
CVE-2026-13257 is a medium-severity vulnerability in IBM Datapower Gateway 10.5.0, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2026-10-08.
How severe is CVE-2026-13257?
Medium severity. CVSS v3 base score is 6.5 out of 10.