{"id":"CVE-2026-3337","aliases":["GHSA-65p9-r9h6-22vj","GHSA-frmv-5gcm-jwxh","RUSTSEC-2026-0043","RUSTSEC-2026-0045"],"url":"https://o3.security/vulnerability/CVE-2026-3337","summary":"Timing Side-Channel in AES-CCM Tag Verification in AWS-LC","details":"Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to potentially determine authentication tag validity via timing analysis.\n\n\n\n\nThe impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and EVP_aes_256_ccm.\n\n\n\n\nCustomers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.","published":"2026-03-02T21:20:08.532Z","modified":"2026-08-12T15:33:21.663374Z","cvss":null,"epss":{"score":0.01079,"percentile":0.62501,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"aws-lc-sys","fixedVersion":"0.38.0"},{"ecosystem":"crates.io","name":"aws-lc-fips-sys","fixedVersion":"0.13.12"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://aws.amazon.com/security/security-bulletins/2026-005-AWS/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3337.json"},{"type":"ADVISORY","url":"https://github.com/aws/aws-lc/security/advisories/GHSA-frmv-5gcm-jwxh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3337"},{"type":"FIX","url":"https://github.com/aws/aws-lc/releases/tag/v1.69.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T15:33:21.663374Z"}}