CVE-2026-0785: Algosolutions 8180 IP Audio Alerter RCE

CVE-2026-0785 Overview

CVE-2026-0785 is a command injection vulnerability affecting the ALGO 8180 IP Audio Alerter device. The flaw resides in the device's API interface, which fails to properly validate a user-supplied string before passing it to a system call. Authenticated remote attackers can leverage this weakness to execute arbitrary operating system commands in the context of the device. The vulnerability is tracked as ZDI-CAN-28294 and was disclosed through the Zero Day Initiative as advisory ZDI-26-007. The issue is classified under CWE-78, Improper Neutralization of Special Elements used in an OS Command.

Critical Impact

Authenticated attackers can achieve remote code execution on ALGO 8180 IP Audio Alerter devices, gaining full control of the audio endpoint and a foothold on the internal network.

Affected Products

• ALGO 8180 IP Audio Alerter firmware version 5.5
• ALGO 8180 IP Audio Alerter hardware device
• Algo Solutions audio notification deployments exposing the device API

Discovery Timeline

• 2026-01-23 - CVE-2026-0785 published to the National Vulnerability Database
• 2026-02-18 - Last updated in NVD database

Technical Details for CVE-2026-0785

Vulnerability Analysis

The ALGO 8180 IP Audio Alerter exposes an API interface that accepts user-supplied input and incorporates that input into a system command. The device does not neutralize shell metacharacters such as ;, |, &, and backticks before invoking the underlying OS command. An authenticated attacker who can reach the API can inject additional commands that run with the privileges of the API process on the embedded device.

Successful exploitation results in arbitrary code execution on the audio appliance. Because IP audio alerters typically reside on segmented but trusted operational networks, a compromised device offers attackers persistence, lateral movement, and the ability to disrupt emergency notification workflows.

Root Cause

The root cause is improper input validation [CWE-78] in the API handler. A user-controlled parameter is concatenated into a string that is passed to a shell or system()-style function without escaping or allow-listing. Any shell metacharacter in the input is therefore interpreted as part of the command stream.

Attack Vector

Exploitation requires network reachability to the device API and valid credentials. The attack complexity is low and no user interaction is required. An attacker submits a crafted API request containing a payload such as legitimate_value; <attacker_command>, causing the device to execute the appended command alongside the intended operation. Refer to the Zero Day Initiative Advisory ZDI-26-007 for additional technical context.

Detection Methods for CVE-2026-0785

Indicators of Compromise

• Unexpected outbound network connections originating from ALGO 8180 device IP addresses.
• API request logs containing shell metacharacters such as ;, |, &&, backticks, or $() in parameter values.
• New or unfamiliar processes, cron entries, or persistence artifacts on the device, if shell access is available.
• Audio playback or configuration changes that do not correlate with authorized administrative activity.

Detection Strategies

• Inspect HTTP/HTTPS traffic to the device management API for parameters containing OS command syntax.
• Monitor authentication logs for credential reuse or brute-force attempts targeting the device, since exploitation requires authentication.
• Baseline normal API request patterns and alert on deviations in payload length, character sets, or endpoint usage.

Monitoring Recommendations

• Forward device syslog and network telemetry to a centralized SIEM for correlation with broader network activity.
• Place ALGO 8180 devices behind network access control lists that restrict API access to a small set of administrative hosts.
• Continuously monitor east-west traffic from VoIP and audio appliance VLANs for connections to non-standard internal or external destinations.

How to Mitigate CVE-2026-0785

Immediate Actions Required

• Inventory all ALGO 8180 IP Audio Alerter devices and identify those running firmware 5.5 or earlier.
• Rotate administrative credentials on every affected device and remove any shared or default accounts.
• Restrict network access to the device API using firewall rules or VLAN segmentation so only authorized management stations can reach it.
• Review device and network logs for prior API requests containing shell metacharacters and investigate any matches.

Patch Information

At the time of publication, no vendor advisory URL is listed in the NVD entry. Contact Algo Solutions for firmware updates that address CVE-2026-0785 and consult the Zero Day Initiative Advisory ZDI-26-007 for the latest remediation status.

Workarounds

• Block API access from untrusted network segments using firewall or switch ACLs until a patched firmware is available.
• Disable or limit API features that are not required for production audio alerting.
• Enforce strong, unique credentials and disable any unused administrative accounts on the device.
• Deploy network monitoring that flags command-injection patterns in traffic destined for the device management interface.