VDB
CISA-2026-3337
CISA-2026-3337
PUBLISHED
CVSS 5.9 MEDIUM
Reported by AMZN · Published March 2, 2026
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.
Risk Scores
CVSS 3.1
5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| AWS | AWS-LC | 1.21.0 |
| AWS | AWS-LC-FIPS | 3.0.0 |
| AWS | AWS-LC | 1.21.0, 1.21.0 |
| AWS | AWS-LC-FIPS | 3.0.0, 3.0.0 |
Timeline
- Mar 2, 2026 CVE Published
- Mar 3, 2026 CVE Updated