What’s Vulnerable › Vulnerabilities
CVE-2025-27909: IBM Concert Software cross-origin resource sharing
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-08-18 · updated 2026-06-17
- Weakness: CWE-942
Description
IBM Concert Software 1.0.0 through 1.1.0 uses cross-origin resource sharing (CORS) which could allow an attacker to carry out privileged actions as the domain name is not being limited to only trusted domains.
Affected products
- IBM Concert: from 1.0.0 before 2.0.0 — fixed in 2.0.0
How to fix
Upgrade to a fixed version: IBM Concert 2.0.0. Check the vendor advisory for mitigations.
References
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