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-2026-3338
High (8.7) in amazon. EPSS 0.8% chance of exploitation in the next 30 days. Fixed in aws-lc-sys 0.38.0.
Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes.
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
- 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
- CWE
- CWE-347
- Published
- Modified
- Record from
- the NVD, synced
Affected
- amazon:aws-lc-sys
- amazon:aws_libcrypto
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-hfpc-8r3f-gw53 | crates.io | aws-lc-sys | >=0.24.0 <0.38.0 | 0.38.0 |
| RUSTSEC-2026-0047 | crates.io | aws-lc-sys | >=0.24.0 <0.38.0 | 0.38.0 |