{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4428","assignerOrgId":"ff89ba41-3aa1-4d27-914a-91399e9639e5","state":"PUBLISHED","assignerShortName":"AMZN","dateReserved":"2026-03-19T13:42:59.783Z","datePublished":"2026-03-19T20:37:53.851Z","dateUpdated":"2026-03-25T14:13:42.572Z"},"containers":{"cna":{"providerMetadata":{"orgId":"ff89ba41-3aa1-4d27-914a-91399e9639e5","shortName":"AMZN","dateUpdated":"2026-03-19T20:40:06.587Z"},"title":"CRL Distribution Point Scope Check Logic Error in AWS-LC","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-299","description":"CWE-299 Improper check for certificate revocation","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-94","descriptions":[{"lang":"en","value":"CAPEC-94 Adversary in the Middle (AiTM)"}]}],"affected":[{"vendor":"AWS","product":"AWS-LC","versions":[{"status":"affected","version":"1.24.0","lessThan":"1.71.0","versionType":"custom"}],"defaultStatus":"unaffected"},{"vendor":"AWS","product":"AWS-LC-FIPS","versions":[{"status":"affected","version":"3.0.0","lessThan":"3.3.0","versionType":"custom"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows  a revoked certificate to bypass certificate revocation checks.\n\nTo remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows  a revoked certificate to bypass certificate revocation checks.<br><br>To remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0.</p>"}]}],"references":[{"url":"https://aws.amazon.com/security/security-bulletins/2026-010-AWS/","tags":["vendor-advisory"]},{"url":"https://github.com/aws/aws-lc/releases/tag/v1.71.0","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseSeverity":"HIGH","baseScore":7.4,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"CRITICAL","baseScore":9.1,"vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-25T14:13:28.437867Z","id":"CVE-2026-4428","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-25T14:13:42.572Z"}}]}}