CVE-2025-36134: IBM Sterling b2b Integrator

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

IBM Sterling B2B Integrator and IBM Sterling File Gateway 6.0.0.0 through 6.1.2.7 and 6.2.0.0 through 6.2.0.5 and 6.2.1.1 could disclose sensitive information due to a missing or insecure SameSite attribute for a sensitive cookie.

Affected products

• IBM Sterling b2b Integrator: from 6.0.0.0, before 6.1.2.7_2 (fixed in 6.1.2.7_2); from 6.2.0.0, before 6.2.0.5_1 (fixed in 6.2.0.5_1); version 6.2.1.1 only
• IBM Sterling File Gateway: from 6.0.0.0, before 6.1.2.7_2 (fixed in 6.1.2.7_2); from 6.2.0.0, before 6.2.0.5_1 (fixed in 6.2.0.5_1); version 6.2.1.1 only

Published 2025-11-25. Last modified 2026-06-17.