Vulnerability · Published Jun 25, 2026 · Assigned by Silabs

CVE-2026-4930DPA Countermeasures weakening on Series 3 devices

High 7.1

In plain English

A high-severity security flaw in Simplicity SDK from silabs.com. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.1%top 96.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

Vendor	Product	Versions
silabs.com	Simplicity SDK	0 – through .

Weakness: CWE-331 · 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

References

https://community.silabs.com/068Vm00000sjHs3 third-party-advisory, permissions-required