CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NCVE-2021-41104
High (7.5) in esphome esphome firmware. EPSS 1.2% chance of exploitation in the next 30 days. Fixed in esphome 2021.9.2.
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`.
Severity
- EPSS
- 1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
- CWE
- CWE-306
- Published
- Modified
- Record from
- the NVD, synced
Affected
- esphome:esphome_firmware
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-48mj-p7x2-5jfm | PyPI | esphome | <2021.9.2 | 2021.9.2 |
| PYSEC-2021-351 | PyPI | esphome | <2021.9.2 | 2021.9.2 |
References
- https://github.com/esphome/esphome/pull/2409/commits/207cde1667d8c799a197b78ca8a5a14de8d5ca1e
- https://github.com/esphome/esphome/releases/tag/2021.9.2
- https://github.com/esphome/esphome/security/advisories/GHSA-48mj-p7x2-5jfm
- https://github.com/esphome/esphome/pull/2409/commits/207cde1667d8c799a197b78ca8a5a14de8d5ca1e
- https://github.com/esphome/esphome/releases/tag/2021.9.2