Vulnerability in IBM Cognos Controller
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- IBM Cognos Controller — versions 10.4.1, 10.4.2, 11.0.0
- IBM Cognos Controller — versions 10.4.1, 10.4.2, 11.0.0
Weakness classification (CWE)
References
- www.ibm.com/support/pages/node/7149876 (vendor-advisory, Vendor Advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/199181 (vdb-entry, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-20556?
- CVE-2021-20556 is a medium-severity vulnerability in IBM Cognos Controller, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2024-05-03.
- How severe is CVE-2021-20556?
- Medium severity. CVSS v3 base score is 5.3 out of 10.