{"cve":"CVE-2026-3338","nvd":{"published":"2026-03-02T22:16:32.350","modified":"2026-07-15T02:20:59.787","status":"Modified","description":"Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes.\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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-347"],"references":["https://aws.amazon.com/security/security-bulletins/2026-005-AWS/","https://github.com/aws/aws-lc/releases/tag/v1.69.0","https://github.com/aws/aws-lc/security/advisories/GHSA-jchq-39cv-q4wj","https://access.redhat.com/errata/RHSA-2026:5459","https://access.redhat.com/security/cve/CVE-2026-3338"],"products":["amazon:aws-lc-sys","amazon:aws_libcrypto"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-3338","score":0.00783,"percentile":0.56025,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hfpc-8r3f-gw53","url":"https://osv.dev/vulnerability/GHSA-hfpc-8r3f-gw53","summary":"AWS-LC has PKCS7_verify Signature Validation Bypass","modified":"2026-09-10T03:50:39.503997737Z","packages":[{"ecosystem":"crates.io","name":"aws-lc-sys","purl":"pkg:cargo/aws-lc-sys","ranges":[">=0.24.0 <0.38.0"],"fixed":["0.38.0"]}]},{"id":"RUSTSEC-2026-0047","url":"https://osv.dev/vulnerability/RUSTSEC-2026-0047","summary":"PKCS7_verify Signature Validation Bypass in AWS-LC","modified":"2026-03-21T06:45:35Z","packages":[{"ecosystem":"crates.io","name":"aws-lc-sys","purl":"pkg:cargo/aws-lc-sys","ranges":[">=0.24.0 <0.38.0"],"fixed":["0.38.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}