cve.bz

CVE-2026-4428

9.1 criticalEPSS 0.3%

Critical (9.1). EPSS 0.3% chance of exploitation in the next 30 days. Fixed in aws-lc-fips-sys 0.13.13.

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

CVSS 4.0

9.1 critical
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.4 high
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-31)
CWE
CWE-299
Published
Modified
Record from
the NVD, synced

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-9f94-5g5w-gf6rcrates.ioaws-lc-fips-sys>=0.13.0 <0.13.130.13.13
GHSA-9f94-5g5w-gf6rcrates.ioaws-lc-sys>=0.15.0 <0.39.00.39.0
RUSTSEC-2026-0042crates.ioaws-lc-fips-sys>=0.13.0 <0.13.130.13.13
RUSTSEC-2026-0048crates.ioaws-lc-sys>=0.15.0 <0.39.00.39.0

References

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