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Case File

CVE-2021-41104

HIGH · CVSS 7.5 EPSS 1.21% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-28 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-41104
Severity
HIGH
CVSS
7.5
EPSS
1.21%

Original NVD Description

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`.

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