cve.bz

CVE-2026-3337

8.2 highEPSS 1.1%

High (8.2) in amazon. EPSS 1.1% chance of exploitation in the next 30 days. Fixed in aws-lc-sys 0.38.0.

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.

Severity

CVSS 4.0

8.2 high
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 3.1

5.9 medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
CWE
CWE-208
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-65p9-r9h6-22vjcrates.ioaws-lc-sys>=0.14.0 <0.38.00.38.0
GHSA-65p9-r9h6-22vjcrates.ioaws-lc-fips-sys>=0.13.0 <0.13.120.13.12
RUSTSEC-2026-0043crates.ioaws-lc-fips-sys>=0.13.0 <0.13.120.13.12
RUSTSEC-2026-0045crates.ioaws-lc-sys>=0.14.0 <0.38.00.38.0

References

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