CVSS 4.0
8.7 highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NCVE-2026-3336
High (8.7) in amazon. EPSS 0.7% chance of exploitation in the next 30 days. Fixed in aws-lc-sys 0.38.0.
Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer.
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 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
- CWE
- CWE-295
- Published
- Modified
- Record from
- the NVD, synced
Affected
- amazon:aws-lc-sys
- amazon:aws_libcrypto
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-vw5v-4f2q-w9xf | crates.io | aws-lc-sys | >=0.24.0 <0.38.0 | 0.38.0 |
| RUSTSEC-2026-0046 | crates.io | aws-lc-sys | >=0.24.0 <0.38.0 | 0.38.0 |