CVE-2025-13510: Iskra iHUB Authentication Bypass Flaw

CVE-2025-13510 Overview

CVE-2025-13510 is a critical authentication bypass vulnerability affecting Iskra iHUB and iHUB Lite smart metering gateways. The devices expose their web management interfaces without requiring authentication, allowing unauthenticated remote attackers to access and modify critical device settings. This vulnerability is classified as CWE-306 (Missing Authentication for Critical Function).

Smart metering gateways play a critical role in Industrial Control Systems (ICS) and utility infrastructure, making this vulnerability particularly concerning for organizations operating critical infrastructure environments.

Critical Impact

Unauthenticated attackers can remotely access and modify critical device settings on Iskra smart metering gateways, potentially compromising utility infrastructure and ICS environments.

Affected Products

• Iskra iHUB Smart Metering Gateway
• Iskra iHUB Lite Smart Metering Gateway

Discovery Timeline

• 2025-12-02 - CVE-2025-13510 published to NVD
• 2025-12-04 - Last updated in NVD database

Technical Details for CVE-2025-13510

Vulnerability Analysis

This vulnerability stems from a fundamental authentication bypass condition in the Iskra iHUB and iHUB Lite smart metering gateways. The web management interface, which provides administrative control over device configuration and settings, is exposed without any authentication mechanism. This allows any network-accessible attacker to interact with the management interface as if they were an authenticated administrator.

The vulnerability is network-exploitable with low attack complexity, requiring no privileges or user interaction to exploit. An attacker with network access to the vulnerable device can directly access the web interface and perform administrative operations including viewing and modifying critical device configurations.

Given the role of smart metering gateways in utility and ICS environments, successful exploitation could have significant operational and safety implications for critical infrastructure.

Root Cause

The root cause of CVE-2025-13510 is the absence of authentication controls on the web management interface. The firmware fails to implement any authentication mechanism before granting access to administrative functions, representing a design flaw that exposes critical functionality to unauthenticated users. This is classified as CWE-306: Missing Authentication for Critical Function.

Attack Vector

The attack vector is network-based, meaning any attacker with network connectivity to the vulnerable device can exploit this vulnerability. The attack requires:

1. Network access to the Iskra iHUB or iHUB Lite device
2. Identification of the device's web management interface (typically HTTP/HTTPS on standard ports)
3. Direct access to administrative pages without credentials

An attacker can simply navigate to the device's web interface URL to gain full administrative access. No credentials, social engineering, or user interaction is required. This makes the vulnerability trivially exploitable once an attacker identifies a vulnerable device on the network.

Detection Methods for CVE-2025-13510

Indicators of Compromise

• Unexpected configuration changes on Iskra iHUB or iHUB Lite devices
• Unauthorized access to device web management interfaces from unknown IP addresses
• Anomalous network traffic patterns to smart metering gateway management ports
• Log entries indicating administrative operations without corresponding authenticated sessions

Detection Strategies

• Monitor network traffic for HTTP/HTTPS connections to Iskra smart metering gateways from unauthorized sources
• Implement network segmentation alerts for any traffic crossing into ICS/SCADA network segments targeting gateway devices
• Deploy intrusion detection signatures for unauthenticated access attempts to known Iskra management interface endpoints
• Review device logs for configuration changes that do not correlate with authorized maintenance windows

Monitoring Recommendations

• Implement continuous monitoring of all network access to smart metering infrastructure
• Deploy SentinelOne Singularity for network visibility and threat detection across ICS environments
• Establish baseline network behavior for smart metering gateways and alert on deviations
• Configure SIEM correlation rules to identify suspicious access patterns to utility infrastructure devices

How to Mitigate CVE-2025-13510

Immediate Actions Required

• Restrict network access to Iskra iHUB and iHUB Lite web management interfaces using firewalls and access control lists
• Isolate smart metering gateways on dedicated network segments with strict ingress/egress controls
• Implement VPN or jump host requirements for any administrative access to affected devices
• Audit current device configurations for unauthorized changes
• Review the CISA ICS Advisory ICSA-25-336-02 for vendor-specific guidance

Patch Information

Organizations should monitor vendor communications from Iskra for firmware updates that address this authentication bypass vulnerability. The CISA ICS Advisory ICSA-25-336-02 provides additional guidance and should be reviewed for the latest mitigation recommendations.

Workarounds

• Deploy network-level access controls to restrict management interface access to authorized administrator IP addresses only
• Place affected devices behind a firewall that blocks all external access to the web management interface
• Implement network monitoring to detect and alert on any unauthorized access attempts to the management interface
• Consider disabling the web management interface entirely if remote administration is not required, using only local console access

# Example firewall rule to restrict management interface access (adjust for your environment)
# Allow only authorized admin network (example: 10.10.10.0/24) to access device management
iptables -A FORWARD -d <IHUB_IP> -p tcp --dport 80 -s 10.10.10.0/24 -j ACCEPT
iptables -A FORWARD -d <IHUB_IP> -p tcp --dport 443 -s 10.10.10.0/24 -j ACCEPT
iptables -A FORWARD -d <IHUB_IP> -p tcp --dport 80 -j DROP
iptables -A FORWARD -d <IHUB_IP> -p tcp --dport 443 -j DROP