CVE-2025-3301 DPA Countermeasures Unavailable for Certain Cryptographic Operations on Series 2 Devices
Missing DPA countermeasures in Silicon Labs Series 2 SoCs allow attackers to potentially expose confidential keys via side-channel attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-3301?
CVE-2025-3301 is a low-severity vulnerability in silabs.com Series 2 SoCs and associated modules, published on 29 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
DPA countermeasures are unavailable for ECDH key agreement and EdDSA signing operations on Curve25519 and Curve448 on all Series 2 modules and SoCs due to a lack of hardware and software support. A successful DPA attack may result in exposure of confidential information. The best practice is to use the impacted crypto curves and operations with ephemeral keys to reduce the number of DPA traces that can be collected.
Weakness: CWE-1255
Which versions are affected by CVE-2025-3301?
How do I fix CVE-2025-3301?
No fix has been published for CVE-2025-3301 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-3301 being exploited?
There is no known exploitation of CVE-2025-3301 in the wild and no public exploit code.
Sources
Also known as GHSA-h3wr-2jpv-p235.