CVE-2026-4930CWE-331

DPA Countermeasures weakening on Series 3 devices

High · published June 25, 2026

CVSS v4.0
7.1
EPSS
0%
Percentile
3.0
In the wild
Unconfirmed
What it is

SYMCRYPTO is the SiXG301's host side hardware engine accessed by PSA crypto library that accelerates symmetric cryptographic operations (AES encryption/decryption and hashing).

DPA Countermeasures on SYMCRYPTO can be weakened (reduced entropy) by forcing certain seed values if an attacker gains code execution capability on the impacted device.

* Therefore, the keys loaded on SYMCRYPTO may be more vulnerable to extraction through DPA attacks than intended

The record
Technical detail
CVSS v4.0
7.1 · HIGH
Vector
CVSS:4.0/AV:P/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H
EPSS
0.00139 · 3.0th percentile
Weakness
CWE-331 · Insufficient Entropy
Published
2026-06-25T18:39Z
EPSS history
Timeline
  • 25 JUN 18:39Z
    DPA Countermeasures weakening on Series 3 devices
    cvelistv5