# Vulnerabilities

This page briefly lists all of the vulnerabilities that are discovered and fixed in each release. Please note that for the on-going issues or the issues under embargo period, the information on this page may reflect once the desired resolution has been achieved.

Note

Please refer to `latest` version of this documentation guide for up-to-date information.

## CVE-2026

### CVE-2026-55687

Stack-Based Out-of-Bounds Write in JPEG Decoder DQT Marker Parsing

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF (ESP32-P4 SoC only)

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-v6r2-f6p2-88cj

### CVE-2026-46532

Heap Out-of-Bounds Read in Bluedroid AVRCP Target Parser

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-3pp8-42fh-3j3c

### CVE-2026-45542

Heap buffer overflow in protocomm Security2 over Bluetooth

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-9r76-858f-v6jh

### CVE-2026-45541

Remote Null Pointer Dereference in WebSocket Server

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-3j8v-xgrq-5vg8

### CVE-2026-45329

Out-of-Bounds Read in ESP-TEE Secure Service Wrappers

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-w82j-7q63-7pqm

### CVE-2026-45328

Out-of-Bounds Write in ESP-TEE Secure Service Wrappers

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-mmgp-73p4-92xp

### CVE-2026-45160

Out-of-bounds Read in lwIP DHCP Server Option Parser

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-g764-gwc3-75m5

### CVE-2026-25532

WPS Enrollee Fragment Integer Underflow Vulnerability

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-m2h2-683f-9mw7

### CVE-2026-25508

Out-of-Bounds Read Vulnerability in BLE Provisioning

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-9j5x-rf36-54x9

### CVE-2026-25507

Use-after-free Vulnerability in BLE Provisioning

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-h7r3-gmg9-xjmg

## CVE-2025

### CVE-2025-68474

Out-of-Bounds Write in ESP32 Bluetooth AVRCP Vendor Command Handling

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-43gh-7r4f-qp57

### CVE-2025-68473

Out-of-Bounds Write in ESP32 Bluetooth SDP Result Handling

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-hmjj-rjvv-w8pq

### CVE-2025-66409

Out-of-Bounds Read in ESP32 Bluetooth AVRCP Command Handling

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-qhf9-vr2h-jh96

### CVE-2025-65092

ESP32-P4 JPEG Decoder Header Parsing Vulnerability

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF (ESP32-P4 SoC only)

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-vcw6-jc3p-4gj8

### CVE-2025-64342

ESP32 Bluetooth Controller Invalid Access Address Vulnerability

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF (ESP32 SoC only)

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-8mg7-9qpg-p92v

### CVE-2025-55297

BluFi Example Memory Overflow Vulnerability

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-9w88-r2vm-qfc4

### CVE-2025-52471

ESP-NOW Integer Underflow Vulnerability Advisory

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-hqhh-cp47-fv5g

## CVE-2024

### CVE-2024-53845

AES/CBC Constant IV Vulnerability in ESPTouch v2

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-wm57-466g-mhrr

### CVE-2024-30949

RISC-V gettimeofday system call vulnerability in Newlib's

- Impact: ESP-IDF does not use system call implementations from Newlib

- Resolution: NA

### CVE-2024-28183

Bootloader TOCTOU Vulnerability in Anti-rollback Scheme

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-22x6-3756-pfp8

## CVE-2023

### CVE-2023-35818

Security Advisory Concerning Bypassing Secure Boot and Flash Encryption Using EMFI

- Espressif Advisory: AR2023-005

- Impact: Applicable for ESP32 Chip Revision v3.0/v3.1

- Resolution: Please see advisory for details

### CVE-2023-24023

Security Advisory Concerning the Bluetooth BLUFFS Vulnerability

- Espressif Advisory: AR2023-010

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

### CVE-2023-52160

Security Advisory for PEAP Phase-2 Authentication

- Espressif Advisory: AR2024-003

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

## CVE-2022

### CVE-2022-24893

Espressif Bluetooth Mesh Stack Vulnerability

- Espressif Advisory: NA (Published on GitHub)

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

- Advisory pointer: GHSA-7f7f-jj2q-28wm

## CVE-2021

### CVE-2021-32020

Insufficient bounds checking during management of heap memory in FreeRTOS

- Impact: ESP-IDF uses its own heap allocator and hence not applicable

- Resolution: NA

### CVE-2021-43997

Privilege escalation issue in FreeRTOS ARMv7-M and ARMv8-M MPU ports

- Impact: Not applicable for Espressif chips

- Resolution: NA

### CVE-2021-3420

Security Advisory on "BadAlloc" Vulnerabilities

- Espressif Advisory: AR2021-005

- Impact: Not applicable for ESP-IDF

- Resolution: NA

### CVE-2021-31571

Security Advisory on "BadAlloc" Vulnerabilities

- Espressif Advisory: AR2021-005

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

### CVE-2021-31572

Security Advisory on "BadAlloc" Vulnerabilities

- Espressif Advisory: AR2021-005

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

### CVE-2021-28139

Security Advisory for Bluetooth Vulnerability

- Covers additional CVEs: CVE-2020-10135, CVE-2020-13595, CVE-2020-26555, CVE-2020-26556, CVE-2020-26557, CVE-2020-26558, CVE-2020-26559, CVE-2020-26560, CVE-2021-28135, CVE-2021-28136

- Espressif Advisory: AR2021-004

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

## CVE-2020

### CVE-2020-22283

Buffer overflow vulnerability in lwIP stack

- Espressif Advisory: NA

- Impact: Applicable for ESP-IDF

- Resolution: Fix cherry-picked and available in ESP-IDF >= v4.4.1

### CVE-2020-22284

Buffer overflow vulnerability in lwIP stack

- Espressif Advisory: NA

- Impact: Applicable for ESP-IDF

- Resolution: Fix cherry-picked and available in ESP-IDF >= v4.4.1

### CVE-2020-26142

Security Advisory for WLAN FragAttacks

- Espressif Advisory: AR2023-008

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

### CVE-2020-12638

Security Advisory Concerning Wi-Fi Authentication Bypass

- Espressif Advisory: AR2020-002

- Impact: Applicable for ESP-IDF

- Resolution: Please see advisory for details

Was this page helpful?

- Thank you! We received your feedback.
- If you have any comments, fill in Espressif Documentation Feedback Form.

- We value your feedback.
- Let us know how we can improve this page by filling in Espressif Documentation Feedback Form.