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Medium severity5.3NVD Advisory· Published May 3, 2024· Updated Jun 17, 2026

CVE-2021-20556

CVE-2021-20556

Description

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

5
  • IBM/Cognos Controller5 versions
    cpe:2.3:a:ibm:cognos_controller:10.4.1:*:*:*:*:*:*:*+ 4 more
    • cpe:2.3:a:ibm:cognos_controller:10.4.1:*:*:*:*:*:*:*
    • cpe:2.3:a:ibm:cognos_controller:10.4.2:*:*:*:*:*:*:*
    • cpe:2.3:a:ibm:cognos_controller:11.0.0:*:*:*:*:*:*:*
    • (no CPE)range: 10.4.1, 10.4.2, and 11.0.0
    • (no CPE)range: 10.4.1, 10.4.2, 11.0.0

Patches

Vulnerability mechanics

References

2

News mentions

0

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