Auth bypass in IBM Sterling B2b Integrator
CVE-2026-19273
IBM Sterling B2B Integrator 6.2.0.0 through 6.2.0.6_2, 6.2.1.0 - 6.2.1.2, 6.2.2.0 - 6.2.2.1 and IBM Sterling File Gateway 6.2.0.0 through 6.2.0.6_2, 6.2.1.0 - 6.2.1.2, 6.2.2.0 - 6.2.2.1 Standard Edition could allow a remote authenticated attacker to bypass security restrictions due to improper authentication.
Vulnerability class: Broken Authentication
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
Affected products
Weakness classification (CWE)
References
- psirt@us.ibm.com (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-19273?
- CVE-2026-19273 is a medium-severity vulnerability in IBM Sterling B2b Integrator, classified under Improper Authentication. CVSS score: 5.4/10. Published 2026-09-14.
- How severe is CVE-2026-19273?
- Medium severity. CVSS v3 base score is 5.4 out of 10.