# CVE-2026-4428: CRL Distribution Point Scope Check Logic Error in AWS-LC

> CVE-2026-4428: CRL Distribution Point Scope Check Logic Error in AWS-LC. CVSS 7.4 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-4428
Last updated: 2026-06-17T10:56:33Z

- Published: 2026-03-19 20:37 UTC · Updated: 2026-06-17 10:56 UTC · Assigner: AMZN
- CVSS: 7.4 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS: 0.26%, 17th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-299

## 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. To remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0.

## Affected vendors and products

- AWS: AWS-LC
- AWS: AWS-LC-FIPS

## Tracked companies

- [Amazon Web Services](https://rewindex.com/company/aws.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-4428)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-4428)
- [https://aws.amazon.com/security/security-bulletins/2026-010-AWS/](https://aws.amazon.com/security/security-bulletins/2026-010-AWS/)
- [https://github.com/aws/aws-lc/releases/tag/v1.71.0](https://github.com/aws/aws-lc/releases/tag/v1.71.0)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-4428 · Markdown: https://rewindex.com/cve/CVE-2026-4428.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-4428 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:37.089Z