What is CVE-2026-1376?

CVE-2026-1376 is a high-severity vulnerability in IBM I, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-03-17.

How severe is CVE-2026-1376?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in IBM I

CVE-2026-1376

IBM i 7.6 could allow a remote attacker to cause a denial of service using failed authentication connections due to improper allocation of resources.

Published 2026-03-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (42.1th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

IBM I — versions 7.6

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

www.ibm.com/support/pages/node/7266422 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-1376?: CVE-2026-1376 is a high-severity vulnerability in IBM I, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-03-17.
How severe is CVE-2026-1376?: High severity. CVSS v3 base score is 7.5 out of 10.