Generation of Weak Initialization Vector (IV) in ESP-IDF - CVE-2024-53845
Published: December 11, 2024 / Updated: May 13, 2026
Vulnerability identifier: #VU131331
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-53845
CWE-ID: CWE-1204
Exploitation vector: Remote 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 disclose sensitive information.
The vulnerability exists due to generation of a weak initialization vector in the ESPTouch v2 protocol implementation in the ESP Wi-Fi component when encrypting provisioning data with AES/CBC. A remote attacker can observe deterministic ciphertext produced with a constant zero IV to disclose sensitive information.
The issue occurs when the optional custom AES key feature is used.
How to mitigate CVE-2024-53845
Install security update from vendor's website.