CVE-2025-3873CWE-787

Buffer overflow in Si91x crypto APIs

Medium · published July 25, 2025

CVSS v4.0
6.0
EPSS
0%
Percentile
24.6
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v4.0
6.0 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00328 · 24.6th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2025-07-25T15:46Z
EPSS history
Timeline
  • 25 JUL 15:46Z
    Buffer overflow in Si91x crypto APIs
    cvelistv5