CVE-2026-25775 Overview
CVE-2026-25775 is a missing authentication vulnerability [CWE-306] in the SenseLive X3050 remote management service. The service accepts firmware retrieval and update requests from any reachable host without verifying user privileges. It also fails to validate the integrity or authenticity of uploaded firmware images. Attackers on the network can read existing firmware or push attacker-controlled images to the device. The flaw affects industrial control systems (ICS) deployments and is tracked under CISA advisory ICSA-26-111-12.
Critical Impact
An unauthenticated network attacker can replace device firmware with a malicious image, achieving full and persistent compromise of the SenseLive X3050.
Affected Products
- SenseLive X3050 industrial gateway
- Devices exposing the remote management service to reachable networks
- Deployments without network-layer access restrictions to management interfaces
Discovery Timeline
- 2026-04-24 - CVE-2026-25775 published to the National Vulnerability Database (NVD)
- 2026-04-24 - Last updated in NVD database
Technical Details for CVE-2026-25775
Vulnerability Analysis
The SenseLive X3050 exposes a remote management service that handles firmware operations. The service processes firmware retrieval and update requests without enforcing authentication or authorization. Any host that can reach the management port can issue firmware commands.
The service also omits cryptographic validation of firmware images. It does not verify a digital signature, certificate chain, or hash from a trusted source. As a result, attackers can supply arbitrary firmware payloads that the device accepts and installs as legitimate.
Firmware-level compromise grants persistent control below the operating system. Attackers can implant backdoors, disable security controls, intercept industrial traffic, and pivot into operational technology (OT) networks. The vulnerability is classified under [CWE-306] Missing Authentication for Critical Function.
Root Cause
The root cause is the absence of two security controls on a critical function. First, the remote management service does not require authentication or check privileges before accepting firmware-related requests. Second, the firmware update path does not verify image integrity or origin. Either control alone would mitigate the attack, and both are missing.
Attack Vector
The attack is performed over the network with no privileges and no user interaction. An attacker locates the X3050 management service, retrieves the running firmware to analyze it, then crafts a modified image. The attacker submits the malicious image through the same unauthenticated channel. The device installs the firmware because it does not validate the source or signature.
For technical details, refer to the CISA ICS Advisory ICSA-26-111-12 and the GitHub CSAF JSON Document.
Detection Methods for CVE-2026-25775
Indicators of Compromise
- Unexpected firmware version strings or build timestamps reported by the X3050 device
- Outbound connections from the device to unfamiliar IP addresses or domains after a management session
- Firmware update events in device logs without a corresponding administrator change ticket
- Network traffic to the X3050 remote management port from hosts outside the OT management subnet
Detection Strategies
- Capture and baseline the firmware hash of each X3050 unit, then alert on any deviation from the approved value
- Monitor network flows to the management service and flag firmware retrieval or upload requests from non-administrative sources
- Inspect device syslog or SNMP traps for firmware update and reboot events that do not align with change windows
Monitoring Recommendations
- Ingest ICS device logs and network metadata into a centralized analytics platform for correlation across the fleet
- Track configuration drift on X3050 devices using periodic polling and compare against a known-good inventory
- Alert on any new listener or service binding originating from the X3050 after a firmware change
How to Mitigate CVE-2026-25775
Immediate Actions Required
- Restrict network access to the X3050 remote management service so only dedicated jump hosts on the OT management VLAN can reach it
- Place affected devices behind an industrial firewall and block management ports from general corporate and internet routes
- Capture and store a verified firmware hash for each device so any unauthorized change can be detected quickly
- Contact the vendor through SenseLive Contact Information for patch availability and guidance
Patch Information
At the time of NVD publication on 2026-04-24, no fixed firmware version is listed in the CVE record. Refer to the CISA ICS Advisory ICSA-26-111-12 for the latest remediation status and any vendor-issued firmware that adds authentication and signature verification to the management service.
Workarounds
- Segment the X3050 into a dedicated OT subnet with strict allowlists at the gateway
- Disable remote management on devices that do not require it and manage them locally
- Require all administrative access to traverse a jump host with multi-factor authentication (MFA) and session recording
- Monitor for and physically inspect devices showing unexpected reboots or firmware changes until a vendor fix is applied
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
