CVE-2021-41104: esphome firmware

csirt@kutim:~/threat-intel/cve/CVE-2021-41104

CVSS 7.5 · High EPSS 1,2%

Kerentanan Missing Authentication for Critical Function pada esphome firmware. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

ESPHome is a system to control the ESP8266/ESP32. Anyone with web_server enabled and HTTP basic auth configured on version 2021.9.1 or older is vulnerable to an issue in which `web_server` allows over-the-air (OTA) updates without checking user defined basic auth username & password. This issue is patched in version 2021.9.2. As a workaround, one may disable or remove `web_server`.

Rincian

Terbit di NVD: 28 September 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-306: Missing Authentication for Critical Function
EPSS (30 hari): 1,2% peluang dieksploitasi; lebih tinggi dari 67,7% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
esphome	esphome firmware	Semua versi sebelum 2021.9.2

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/esphome/esphome/pull/2409/commits/207cde1667d8c799a197b78ca8a5a14de8d5ca1e patch · advisory pihak ketiga
https://github.com/esphome/esphome/security/advisories/GHSA-48mj-p7x2-5jfm patch · advisory pihak ketiga
https://github.com/esphome/esphome/releases/tag/2021.9.2 release notes · advisory pihak ketiga

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.