CVE-2026-4428 (GCVE-0-2026-4428)
Vulnerability from cvelistv5 – Published: 2026-03-19 20:37 – Updated: 2026-03-25 14:13
VLAI
EPSS
VEX
Title
CRL Distribution Point Scope Check Logic Error in AWS-LC
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.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-25 14:13 UTC
CWE
- CWE-299 - Improper check for certificate revocation
Assigner
AMZN
CNA
References
2 references
| URL | Tags |
|---|---|
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/aws/aws-lc/releases/tag/v1.71.0 | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | AWS-LC |
Affected:
1.24.0 , < 1.71.0
(custom)
|
|
| AWS | AWS-LC-FIPS |
Affected:
3.0.0 , < 3.3.0
(custom)
|
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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