CVE-2025-2567: Privilege Escalation Vulnerability

CVE-2025-2567 Overview

CVE-2025-2567 is a missing authentication vulnerability [CWE-306] affecting Automatic Tank Gauge (ATG) systems used in fuel storage and supply chain operations. An unauthenticated remote attacker can modify or disable device settings, disrupt fuel monitoring, and disable ATG monitoring entirely. The flaw is documented in CISA ICS Advisory ICSA-25-105-05 and carries a CVSS v4.0 score of 9.3. Successful exploitation creates potential safety hazards in fuel storage and transportation environments where continuous monitoring is required for leak detection, inventory management, and regulatory compliance.

Critical Impact
An unauthenticated network attacker can remotely alter ATG configuration, disable monitoring, and undermine fuel supply chain safety controls.

Affected Products

Automatic Tank Gauge (ATG) systems referenced in CISA ICS Advisory ICSA-25-105-05
Industrial control system deployments exposing ATG interfaces to networks
Fuel storage and transportation monitoring infrastructure

Discovery Timeline

2025-04-15 - CVE-2025-2567 published to the National Vulnerability Database
2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-2567

Vulnerability Analysis

The vulnerability stems from the absence of authentication on ATG management interfaces exposed over the network. An attacker reaching the device can issue configuration changes, disable alarms, or stop monitoring functions without presenting any credentials. The flaw maps to [CWE-306] Missing Authentication for Critical Function. Because ATG systems track fuel levels, temperatures, and leak conditions in real time, disabling monitoring removes a primary safety control. The CISA ICS advisory categorizes the issue as remotely exploitable with low attack complexity, reflecting the lack of pre-authentication barriers between an attacker and critical device functions.

Root Cause

The root cause is the failure to enforce authentication on management and configuration endpoints. Critical operations that change device behavior are accessible without identity verification. There is no session establishment, credential validation, or authorization check tied to operations that modify ATG state.

Attack Vector

The attack vector is network-based and requires no privileges or user interaction. An attacker with reachability to the ATG service port can send configuration or control commands directly. Devices exposed to the internet, or accessible through flat operational technology (OT) networks, are most at risk. Refer to the CISA ICS Advisory ICSA-25-105-05 for protocol-level technical details.

No verified public exploit code or proof-of-concept is available at this time. The vulnerability mechanism is described in prose rather than reproduced here.

Detection Methods for CVE-2025-2567

Indicators of Compromise

Unexpected configuration changes on ATG devices, including disabled alarms, modified tank thresholds, or altered communication settings
Loss of telemetry or gaps in fuel-level reporting from monitored tanks
Connections to ATG service ports originating from unauthorized hosts or external IP ranges
Device reboots, parameter resets, or firmware-state changes that do not correlate with scheduled maintenance

Detection Strategies

Inventory all ATG devices and verify whether their management interfaces are reachable from outside the OT segment
Capture and inspect network traffic for commands sent to ATG protocol ports without prior authentication handshakes
Establish a baseline of normal ATG telemetry and alert on deviations such as flat-lined readings or sudden setting changes

Monitoring Recommendations

Forward ATG and surrounding network logs to a centralized SIEM for correlation with IT and OT events
Monitor north-south and east-west traffic to ATG hosts using network intrusion detection tuned for ICS protocols
Alert on configuration write operations performed outside maintenance windows or by unknown source addresses

How to Mitigate CVE-2025-2567

Immediate Actions Required

Remove ATG management interfaces from direct internet exposure and restrict access to dedicated OT management hosts
Place ATG devices behind firewalls and segment them from corporate IT networks
Require VPN access with multi-factor authentication for any remote operator who must reach ATG systems
Review device logs and configuration baselines for unauthorized changes

Patch Information

Vendor and product details are not enumerated in the published CVE record. Asset owners should consult the CISA ICS Advisory ICSA-25-105-05 for the affected vendors, models, and any firmware updates or vendor-specific guidance. Apply patches or hardening steps published by the device manufacturer as soon as they are available.

Workarounds

Disable any unused network services on ATG devices to reduce the exposed attack surface
Apply network access control lists that permit ATG communications only from authorized monitoring servers
Where supported by the device, enable any available authentication, access control, or write-protect features
Deploy ICS-aware intrusion detection at boundaries between IT and OT networks to flag anomalous ATG traffic

bash

# Example firewall policy restricting ATG access to a dedicated monitoring host
# Replace interface names, addresses, and port with values from your environment
iptables -A INPUT -i eth0 -p tcp --dport 10001 -s 10.20.30.40 -j ACCEPT
iptables -A INPUT -i eth0 -p tcp --dport 10001 -j DROP