CVE-2021-20556

MEDIUM
Published May 3, 2024 Modified Jan 7, 2025 CWE-204 CWE-203

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.

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CVSS v3.1 Score

5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-204 CWE-204
CWE-203 CWE-203

Affected Products

Vendor Product
ibm cognos_controller
ibm cognos_controller
ibm cognos_controller

References

Frequently Asked Questions

What is CVE-2021-20556? +
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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2021-20556? +
CVE-2021-20556 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2021-20556? +
CVE-2021-20556 affects products from ibm, specifically: cognos_controller. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2021-20556? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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