CVE-2025-7071: ocrypto 3.1.0 through 3.9.1

Affected technology

ocrypto · 3.1.0 through 3.9.1
Oberon microsystems AG

Description’s affected range: versions since 3.1.0 and prior to 3.9.2

Component: AES-CBC with PKCS#7 padding

Attack conditions (Vendor/CNA, CVSS 4.0): Local · No privileges required · No user interaction required

What an attacker can do

An attacker can recover plaintexts via timing measurements of AES-CBC PKCS#7 decrypt operations. Vendor/CNA’s CVSS 4.0 assessment (base score 5.9/10) rates confidentiality impact as high; integrity and availability impact as none.