{"id":"CVE-2026-4428","sourceIdentifier":"ff89ba41-3aa1-4d27-914a-91399e9639e5","published":"2026-03-19T21:17:14.170","lastModified":"2026-06-17T10:56:33.390","vulnStatus":"Awaiting Analysis","cveTags":[],"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."},{"lang":"es","value":"Un error lógico en la validación del punto de distribución de CRL en AWS-LC anterior a 1.71.0 provoca que las CRL particionadas sean rechazadas incorrectamente por estar fuera de alcance, lo que permite que un certificado revocado eluda las comprobaciones de revocación de certificados.\n\nPara remediar este problema, los usuarios deben actualizar a AWS-LC 1.71.0 o AWS-LC-FIPS-3.3.0."}],"affected":[{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","affectedData":[{"vendor":"AWS","product":"AWS-LC","defaultStatus":"unaffected","versions":[{"version":"1.24.0","lessThan":"1.71.0","versionType":"custom","status":"affected"}]},{"vendor":"AWS","product":"AWS-LC-FIPS","defaultStatus":"unaffected","versions":[{"version":"3.0.0","lessThan":"3.3.0","versionType":"custom","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","type":"Secondary","cvssData":{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","baseScore":7.4,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-03-25T14:13:28.437867Z","id":"CVE-2026-4428","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","type":"Secondary","description":[{"lang":"en","value":"CWE-299"}]}],"references":[{"url":"https://aws.amazon.com/security/security-bulletins/2026-010-AWS/","source":"ff89ba41-3aa1-4d27-914a-91399e9639e5"},{"url":"https://github.com/aws/aws-lc/releases/tag/v1.71.0","source":"ff89ba41-3aa1-4d27-914a-91399e9639e5"}]}