Description
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.
Scores
CVSS v3
7.5
EPSS
0.0001
EPSS Percentile
2.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-295
Status
published
Products (3)
amazon/aws-lc-sys
0.24.0 - 0.38.0
amazon/aws_libcrypto
1.41.0 - 1.69.0
aws/aws_libcrypto
1.41.0 - 1.69.0
Published
Mar 02, 2026
Tracked Since
Mar 03, 2026