CVE-2025-3873

Buffer overflow in Si91x crypto APIs

Description

The following APIs for the Silcon Labs SiWx91x prior to vesion 3.4.0 failed to check the size of the output buffer of the caller which could lead to data corruption on the host (Cortex-M4) application. sl_si91x_aes sl_si91x_gcm sl_si91x_ccm sl_si91x_sha

Category

6.0
CVSS
Severity: Medium
CVSS 4.0 •
EPSS 0.04%
Vendor Advisory silabs.com
Affected: silabs.com WiseConnect
Published at:
Updated at:

References

Link Tags
https://docs.silabs.com/wiseconnect/latest/sisdk-wifi-release-notes/ release notes
https://community.silabs.com/068Vm00000SSlOu permissions required vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-3873?
CVE-2025-3873 has been scored as a medium severity vulnerability.
How to fix CVE-2025-3873?
To fix CVE-2025-3873, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-3873 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-3873 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-3873?
CVE-2025-3873 affects silabs.com WiseConnect.
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