Aws Aws-Lc vulnerabilities

CVE-2026-4428 [CRITICAL] CWE-299 CVE-2026-4428: A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs t 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.

CVE-2026-3338 [HIGH] CWE-347 CVE-2026-3338: Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass s Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes. Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.

CVE-2026-3337 [HIGH] CWE-208 CVE-2026-3337: Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to pote Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to potentially determine authentication tag validity via timing analysis. The impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and EVP_aes_256_ccm. Customers of AWS services do not need to take action. Applications u

CVE-2026-3336 [HIGH] CWE-295 CVE-2026-3336: Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer. Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.