CVE-2026-4428
7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| AWS | AWS-LC | 1.24.0 < 1.71.0 | affected |
| AWS | AWS-LC-FIPS | 3.0.0 < 3.3.0 | affected |
Weaknesses
- CWE-299: CWE-299 Improper check for certificate revocation
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://aws.amazon.com/security/security-bulletins/2026-010-AWS/
- https://github.com/aws/aws-lc/releases/tag/v1.71.0
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