CVE-2026-3337
Discovered by AISLEPUBLISHEDCWE-208
Description
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 using AWS-LC should upgrade to AWS-LC version 1.69.0.
CVSS Base Scores
CVSS v4.08.2
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS v3.1
5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected Products
| Vendor | Product | Version | Status |
|---|---|---|---|
| AWS | AWS-LC | 1.21.0 | affected |
| AWS | AWS-LC | 3.0.0 | — |
| AWS | AWS-LC-FIPS | 1.21.0 | affected |
| AWS | AWS-LC-FIPS | 3.0.0 | — |