## Summary
CVE-2026-27843 affects the SenseLive X3050 web management interface (firmware 1.523). The issue allows critical configuration parameters to be modified without sufficient authentication or server-side validation, enabling an attacker to induce a persistent lockout state and cause denial-of-service to the gateway and its connected RS-485 downstream systems.
## Technical Details
- The vulnerability is described as improper authentication and/or missing server-side validation for critical configuration changes in the X3050 web management interface.
- An attacker can apply unsupported or disruptive values to:
- recovery mechanisms
- network settings
- This results in a persistent lockout state.
- The device lacks a physical reset button; recovery requires specialized technical access via the console to perform a factory reset, leading to total denial-of-service for the gateway and attached RS-485 systems.
- CWE: CWE-306.
## Affected
- SenseLive X3050 firmware 1.523 (listed by CISA as affected for CVE-2026-27843).
## Impact
- Persistent lockout of the gateway management/recovery functions.
- Denial-of-service to the gateway and its connected RS-485 downstream systems.
- Potential for high-impact configuration tampering via the web management interface.
## Mitigation
1. Apply the vendor’s recommended patch or firmware update for SenseLive X3050 (firmware 1.523) as referenced by CISA advisory ICSA-26-111-12.
2. Restrict network access to the X3050 web management interface to trusted management networks only.
3. Monitor for anomalous configuration changes and repeated recovery/network-setting modifications from the management interface.
4. Prepare an incident response plan that includes console-based factory reset procedures, since the device has no physical reset button.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE-306