CVE-2025-53540 HIGH

CVE-2025-53540: CSRF Vulnerability in Firmware Update Endpoints Allows Remote Code Execution

Vendor Espressif
Product arduino-esp32
Weakness CWE-352 · CSRF
Published July 7, 2025
Last update July 7, 2025
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontrollers. Several OTA update examples and the HTTPUpdateServer implementation are vulnerable to Cross-Site Request Forgery (CSRF). The update endpoints accept POST requests for firmware uploads without CSRF protection. This allows an attacker to upload and execute arbitrary firmware, resulting in remote code execution (RCE). This vulnerability is fixed in 3.2.1.

Key dates

02Disclosure timeline

July 7, 2025 CVE published
July 7, 2025 Record updated

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04Related CVE

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