CVE-2021-29726: IBM Secure External Authentication Server

Medium severity, CVSS 5.3. EPSS: 0.9% chance of exploitation in the next 30 days.

IBM Sterling Secure Proxy 6.0.3 and IBM Secure External Authentication Server 6.0.3 does not properly ensure that a certificate is actually associated with the host due to improper validation of certificates. IBM X-Force ID: 201104.

Affected products

• IBM Secure External Authentication Server: version 6.0.3 only
• IBM Sterling Secure Proxy: version 6.0.3 only

Published 2022-05-17. Last modified 2026-06-17.