Out-of-bounds write in ESP-IDF - CVE-2026-45328
Published: May 13, 2026
Vulnerability identifier: #VU131333
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-45328
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Espressif Systems
Affected software:
ESP-IDF
ESP-IDF
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to out-of-bounds write in secure-service wrappers in esp_secure_services.c and esp_secure_services_iram.c when processing caller-supplied pointer arguments for secure service calls. A remote attacker can supply crafted pointers that target TEE-resident memory to execute arbitrary code.
Exploitation requires local code execution in the REE and can break the REE/TEE isolation boundary.
How to mitigate CVE-2026-45328
Install security update from vendor's website.