What is CVE-2026-78573?

CVE-2026-78573 is a critical-severity vulnerability in IBM Contextforge, classified under CWE-1392. CVSS score: 9.8/10. Published 2026-09-10.

How severe is CVE-2026-78573?

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

Vulnerability in IBM Contextforge

CVE-2026-78573

IBM ContextForge MCP Gateway 1.0.0 through 1.0.7 could allow a remote attacker to gain administrative access due to the use of default credentials.

Published 2026-09-10 · last modified 2026-09-16.

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.

EPSS exploit prediction

EPSS: 0.006 (47.2th percentile), scored 2026-10-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-1392

References

www.ibm.com/support/pages/node/7286834 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-78573?: CVE-2026-78573 is a critical-severity vulnerability in IBM Contextforge, classified under CWE-1392. CVSS score: 9.8/10. Published 2026-09-10.
How severe is CVE-2026-78573?: Critical severity. CVSS v3 base score is 9.8 out of 10.