CVE-2024-39776 Overview
CVE-2024-39776 affects Avtec Outpost, a land mobile radio dispatch console system used in public safety and industrial control environments. The flaw stems from sensitive information stored in an insecure location without proper access controls [CWE-219]. An unauthenticated remote attacker can retrieve sensitive data over the network without user interaction. CISA published advisory ICSA-24-235-04 covering the affected components: the Outpost Uploader Utility, Outpost 0810 firmware, and the Outpost 0810 hardware appliance.
Critical Impact
Unauthenticated network-based access to sensitive configuration or credential data stored by Avtec Outpost components, enabling downstream compromise of dispatch and radio infrastructure.
Affected Products
- Avtec Outpost Uploader Utility
- Avtec Outpost 0810 firmware
- Avtec Outpost 0810 hardware appliance
Discovery Timeline
- 2024-08-22 - CVE-2024-39776 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-39776
Vulnerability Analysis
The Outpost product line stores sensitive information in a location accessible without authentication or access control enforcement. CWE-219 (Storage of File with Sensitive Data Under Web Root) describes this class of weakness, where data intended to be protected resides in a directory reachable through a network-facing service. Attackers reaching the exposed location can retrieve the contents directly without authenticating to the application.
The flaw is reachable across the network with low attack complexity and no privileges. Confidentiality impact is high, while integrity and availability are not directly affected by the disclosure itself. Disclosed material from an industrial control system console typically includes configuration files, deployment artifacts, or credentials that an attacker can repurpose against the broader dispatch environment.
Root Cause
The root cause is improper placement of sensitive files combined with missing access control on the storage location. The Outpost Uploader Utility and Outpost 0810 firmware do not enforce authentication or authorization checks on the resource path holding the data. Files that should be restricted to administrators are reachable by any network client able to reach the service.
Attack Vector
The attack vector is network-based and pre-authentication. An attacker with reachability to an exposed Outpost component issues requests to the unprotected storage path and downloads the contents. No social engineering, credentials, or user interaction is required. In operational technology networks where Outpost devices are reachable from corporate segments or untrusted networks, this exposure can be probed with standard HTTP tooling.
No verified public exploit code is available. Refer to the CISA ICS Advisory ICSA-24-235-04 for vendor-supplied technical details.
Detection Methods for CVE-2024-39776
Indicators of Compromise
- Unexpected HTTP GET requests from external or non-administrative hosts targeting Outpost Uploader Utility paths or Outpost 0810 management interfaces.
- Outbound transfers of configuration or backup files originating from Outpost hosts to unfamiliar destinations.
- Authentication or radio-system anomalies that follow earlier reconnaissance of an Outpost endpoint.
Detection Strategies
- Inspect web and proxy logs on Outpost devices for requests to file paths containing configuration, backup, or credential artifacts.
- Baseline normal administrator IP ranges and alert on any other source accessing the Outpost management surface.
- Correlate file-access events with network flow data to identify bulk retrieval of sensitive files.
Monitoring Recommendations
- Place network sensors between IT and OT segments to capture traffic to and from Outpost 0810 devices.
- Forward Outpost web server logs and authentication logs to a centralized SIEM for retention and analysis.
- Alert on first-seen client IPs interacting with Outpost services, especially outside scheduled maintenance windows.
How to Mitigate CVE-2024-39776
Immediate Actions Required
- Apply the remediation guidance published in CISA ICS Advisory ICSA-24-235-04 and contact Avtec for current firmware updates for Outpost 0810 and the Outpost Uploader Utility.
- Remove Outpost components from any internet-reachable interface and verify segmentation between OT and IT networks.
- Rotate any credentials, certificates, or keys that may have been stored on affected Outpost devices.
Patch Information
Refer to CISA ICS Advisory ICSA-24-235-04 for vendor remediation guidance. Avtec coordinates fixes directly with operators; engage the vendor to obtain the firmware revision that addresses the insecure storage location and to confirm secure deployment procedures for the Outpost Uploader Utility.
Workarounds
- Restrict access to Outpost management interfaces using firewall rules that allow only known administrator workstations.
- Place Outpost devices behind a VPN or jump host that enforces multi-factor authentication.
- Disable or block remote access to the Outpost Uploader Utility on hosts where it is not required for operations.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
