CVE-2026-0795: ALGO 8180 IP Audio Alerter RCE Vulnerability

CVE-2026-0795 Overview

CVE-2026-0795 is a command injection vulnerability affecting ALGO 8180 IP Audio Alerter devices. This vulnerability allows remote attackers to execute arbitrary code on affected installations through the web-based user interface. While authentication is required to exploit this vulnerability, successful exploitation enables attackers to execute system commands in the context of the device.

The specific flaw exists within the web-based user interface and results from the lack of proper validation of a user-supplied string before using it to execute a system call. This vulnerability was initially tracked as ZDI-CAN-28321 by the Zero Day Initiative.

Critical Impact

Authenticated attackers can achieve remote code execution on ALGO 8180 IP Audio Alerter devices, potentially compromising audio alert systems in enterprise and industrial environments.

Affected Products

• ALGO 8180 IP Audio Alerter
• ALGO 8180 IP Audio Alerter Web User Interface
• Devices with vulnerable web management interface

Discovery Timeline

• January 23, 2026 - CVE-2026-0795 published to NVD
• January 26, 2026 - Last updated in NVD database

Technical Details for CVE-2026-0795

Vulnerability Analysis

This vulnerability is classified as CWE-78 (OS Command Injection), a critical flaw where user-supplied input is improperly handled before being passed to a system shell for execution. The ALGO 8180 IP Audio Alerter's web-based management interface fails to adequately sanitize input parameters, allowing an authenticated attacker to inject arbitrary operating system commands.

The attack requires network access and valid authentication credentials, which limits the immediate attack surface but still poses significant risk in scenarios where default credentials are used or credentials have been compromised. Once authenticated, an attacker can leverage this vulnerability to gain complete control over the device, potentially using it as a pivot point for further network intrusion or to disrupt audio alerting services.

Root Cause

The root cause of CVE-2026-0795 lies in improper input validation within the web interface's backend processing. When user-supplied strings are received by the application, they are passed directly to system call functions without proper sanitization or escaping. This allows metacharacters and command separators (such as ;, |, &&, or backticks) to break out of the intended command context and execute additional attacker-controlled commands on the underlying operating system.

Attack Vector

The vulnerability is exploitable over the network through the device's web management interface. An attacker must first obtain valid credentials through credential theft, phishing, or exploiting weak/default passwords. Once authenticated, the attacker can craft malicious input containing command injection payloads and submit them through the vulnerable web interface parameter.

The injected commands execute with the privileges of the web service process, which on embedded IoT devices like the ALGO 8180 typically runs with elevated or root-level permissions. This allows attackers to read sensitive configuration data, modify device settings, install persistent backdoors, or pivot to attack other systems on the network.

Detection Methods for CVE-2026-0795

Indicators of Compromise

• Unexpected outbound network connections from ALGO 8180 devices to unknown IP addresses
• Anomalous system commands or processes spawning from the web service
• Unusual log entries in the device's web interface access logs containing special characters or shell metacharacters
• Changes to device configuration or firmware that were not authorized by administrators

Detection Strategies

• Monitor HTTP request logs for suspicious input patterns containing shell metacharacters (;, |, &&, $(), backticks)
• Implement network-based intrusion detection rules to identify command injection attempts targeting ALGO devices
• Deploy endpoint detection on network segments containing IoT devices to identify anomalous behavior
• Audit authentication logs for unusual login patterns or brute-force attempts against device web interfaces

Monitoring Recommendations

• Establish baseline network behavior for ALGO 8180 devices and alert on deviations
• Configure SIEM rules to correlate authentication events with subsequent suspicious activity from the same source
• Implement network segmentation monitoring to detect lateral movement attempts from compromised IoT devices
• Regularly review device logs for evidence of exploitation attempts or successful compromise

How to Mitigate CVE-2026-0795

Immediate Actions Required

• Restrict network access to ALGO 8180 web management interfaces using firewall rules or network segmentation
• Ensure all device credentials have been changed from defaults to strong, unique passwords
• Audit current device configurations and logs for signs of prior exploitation
• Place ALGO 8180 devices on isolated network segments with limited connectivity to critical infrastructure

Patch Information

Organizations should consult the Zero Day Initiative Advisory ZDI-26-017 for detailed information regarding vendor response and available patches. Contact ALGO directly for firmware updates that address this command injection vulnerability. Ensure all patches are tested in a non-production environment before deployment.

Workarounds

• Disable remote web management interface access if not required for operations
• Implement network-level access controls to limit web interface access to trusted administrator IP addresses only
• Use a VPN or jump host to access device management interfaces rather than exposing them directly
• Enable any available logging and auditing features on the device to detect exploitation attempts
• Consider deploying a web application firewall (WAF) in front of device management interfaces to filter malicious input

# Network segmentation example - restrict ALGO device management access
# Add firewall rules to limit access to management interface
iptables -A INPUT -p tcp --dport 80 -s 10.0.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 10.0.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP