High 7.4Published Mar 19, 2026

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

Updated under an hour ago (Oct 26, 2026, 8:10 PM ET)

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It affects AWS-LC and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for AWS-LC

Exploited in the last 30 days

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.

CVSS: 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-299
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: AMZN
NVD analysis: Awaiting Analysis
Record last updated: Mar 25, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

AWS AWS-LC aws:lc (from the name)	from 1.24.0 before 1.71.0	CNA record
AWS AWS-LC-FIPS aws:lc_fips (from the name)	from 3.0.0 before 3.3.0	CNA record

References

References

https://aws.amazon.com/security/security-bulletins/2026-010-AWS/	vendor-advisory
https://github.com/aws/aws-lc/releases/tag/v1.71.0	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.