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 (v2.0.3)
CWE
- CWE-299 - Improper check for certificate revocation
Assigner
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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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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