{"cve":"CVE-2026-4428","nvd":{"published":"2026-03-19T21:17:14.170","modified":"2026-06-17T10:56:33.390","status":"Awaiting Analysis","description":"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.","cvss_v4":{"vector":"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","score":9.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.4},"cwes":["CWE-299"],"references":["https://aws.amazon.com/security/security-bulletins/2026-010-AWS/","https://github.com/aws/aws-lc/releases/tag/v1.71.0"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-4428","score":0.00257,"percentile":0.17356,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-9f94-5g5w-gf6r","url":"https://osv.dev/vulnerability/GHSA-9f94-5g5w-gf6r","summary":"CRL Distribution Point Scope Check Logic Error in AWS-LC","modified":"2026-09-10T03:50:38.508589596Z","packages":[{"ecosystem":"crates.io","name":"aws-lc-fips-sys","purl":"pkg:cargo/aws-lc-fips-sys","ranges":[">=0.13.0 <0.13.13"],"fixed":["0.13.13"]},{"ecosystem":"crates.io","name":"aws-lc-sys","purl":"pkg:cargo/aws-lc-sys","ranges":[">=0.15.0 <0.39.0"],"fixed":["0.39.0"]}]},{"id":"RUSTSEC-2026-0042","url":"https://osv.dev/vulnerability/RUSTSEC-2026-0042","summary":"CRL Distribution Point Scope Check Logic Error in AWS-LC","modified":"2026-03-20T17:26:22.199786Z","packages":[{"ecosystem":"crates.io","name":"aws-lc-fips-sys","purl":"pkg:cargo/aws-lc-fips-sys","ranges":[">=0.13.0 <0.13.13"],"fixed":["0.13.13"]}]},{"id":"RUSTSEC-2026-0048","url":"https://osv.dev/vulnerability/RUSTSEC-2026-0048","summary":"CRL Distribution Point Scope Check Logic Error in AWS-LC","modified":"2026-03-20T17:26:22.199786Z","packages":[{"ecosystem":"crates.io","name":"aws-lc-sys","purl":"pkg:cargo/aws-lc-sys","ranges":[">=0.15.0 <0.39.0"],"fixed":["0.39.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}