{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-10T15:54:07.057","vulnerabilities":[{"cve":{"id":"CVE-2021-20556","sourceIdentifier":"psirt@us.ibm.com","published":"2024-05-03T18:15:07.907","lastModified":"2025-01-07T18:20:08.197","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"IBM Cognos Controller 10.4.1, 10.4.2 y 11.0.0 podrían permitir que un usuario remoto enumere nombres de usuarios debido a mensajes de error diferenciadores en nombres de usuarios existentes. ID de IBM X-Force: 199181."}],"metrics":{"cvssMetricV31":[{"source":"psirt@us.ibm.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4}]},"weaknesses":[{"source":"psirt@us.ibm.com","type":"Secondary","description":[{"lang":"en","value":"CWE-204"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-203"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ibm:cognos_controller:10.4.1:*:*:*:*:*:*:*","matchCriteriaId":"04E5A9C3-0F44-40C1-B6B6-92839E386F56"},{"vulnerable":true,"criteria":"cpe:2.3:a:ibm:cognos_controller:10.4.2:*:*:*:*:*:*:*","matchCriteriaId":"7AA07D9A-71F7-446A-8A8E-DD8C357666F0"},{"vulnerable":true,"criteria":"cpe:2.3:a:ibm:cognos_controller:11.0.0:*:*:*:*:*:*:*","matchCriteriaId":"4BB85020-BF02-4C91-B494-93FB19185006"}]}]}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/199181","source":"psirt@us.ibm.com","tags":["Vendor Advisory"]},{"url":"https://www.ibm.com/support/pages/node/7149876","source":"psirt@us.ibm.com","tags":["Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/199181","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://www.ibm.com/support/pages/node/7149876","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}