CVE-2026-3337Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to potentially determine authentication tag validity via timing analysis.
Updated under an hour ago ()
Does this affect you?
It affects amazon aws-lc-fips-sys and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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
- 5.9 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- Weakness (CWE)
- CWE-208
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
amazon aws-lc-fips-sys amazon:aws-lc-fips-sys | from 0.13.0 before 0.13.12 | NVD |
amazon aws-lc-sys amazon:aws-lc-sys | from 0.14.0 before 0.38.0 | NVD |
amazon aws_libcrypto amazon:aws_libcrypto | from 1.21.0 before 1.69.0; from 3.0.0 before 3.2.0 | NVD |
References
- https://aws.amazon.com/security/security-bulletins/2026-005-AWS/vendor-advisory
- https://github.com/aws/aws-lc/releases/tag/v1.69.0release-notes
- https://github.com/aws/aws-lc/security/advisories/GHSA-frmv-5gcm-jwxhvendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.