CVE-2026-0793 Overview
CVE-2026-0793 is a heap-based buffer overflow vulnerability affecting ALGO 8180 IP Audio Alerter devices. This vulnerability allows remote attackers to execute arbitrary code on affected installations without requiring authentication. The flaw exists within the InformaCast functionality and results from improper validation of user-supplied data length before copying it to a heap-based buffer.
Critical Impact
Remote attackers can execute arbitrary code on vulnerable ALGO 8180 devices without authentication, potentially enabling complete device compromise and network intrusion.
Affected Products
- ALGO 8180 IP Audio Alerter devices with InformaCast functionality
Discovery Timeline
- 2026-01-23 - CVE-2026-0793 published to NVD
- 2026-01-26 - Last updated in NVD database
Technical Details for CVE-2026-0793
Vulnerability Analysis
This vulnerability is classified as CWE-122 (Heap-based Buffer Overflow). The InformaCast functionality in ALGO 8180 IP Audio Alerter devices fails to properly validate the length of user-supplied data before copying it to a heap-based buffer. This memory corruption vulnerability can be exploited remotely over the network without authentication, allowing attackers to execute code in the context of the device.
The vulnerability was tracked internally as ZDI-CAN-28302 and publicly disclosed through the Zero Day Initiative Advisory ZDI-26-015.
Root Cause
The root cause of this vulnerability is insufficient bounds checking in the InformaCast component. When processing incoming data, the affected code fails to validate that the user-supplied data length does not exceed the allocated heap buffer size. This allows an attacker to overflow the buffer and corrupt adjacent heap memory, potentially overwriting critical data structures or function pointers.
Attack Vector
The attack vector is network-based, requiring no authentication to exploit. An attacker can send specially crafted network requests to the InformaCast service on vulnerable ALGO 8180 devices. By manipulating the length of supplied data, the attacker can trigger a heap overflow condition.
The vulnerability manifests in the data handling routines of the InformaCast functionality. When a malicious payload with excessive data length is received, the lack of proper bounds validation allows memory corruption to occur. An attacker can leverage this memory corruption to achieve arbitrary code execution in the context of the device. For detailed technical information, see the Zero Day Initiative Advisory ZDI-26-015.
Detection Methods for CVE-2026-0793
Indicators of Compromise
- Unexpected network connections to ALGO 8180 devices on InformaCast service ports
- Anomalous memory usage or device crashes indicating heap corruption
- Unusual process behavior or unauthorized code execution on affected devices
Detection Strategies
- Monitor network traffic to ALGO 8180 devices for abnormally large InformaCast protocol messages
- Implement intrusion detection rules to identify potential heap overflow exploit attempts targeting InformaCast services
- Deploy network segmentation to isolate IoT and audio alerter devices from untrusted networks
Monitoring Recommendations
- Enable logging on network infrastructure to track connections to ALGO 8180 devices
- Implement anomaly detection for unusual traffic patterns to embedded devices
- Regularly audit device behavior and resource utilization for signs of compromise
How to Mitigate CVE-2026-0793
Immediate Actions Required
- Isolate affected ALGO 8180 devices behind network firewalls that restrict access to trusted sources only
- Disable or restrict access to InformaCast functionality if not required for operations
- Implement network segmentation to limit exposure of vulnerable devices to untrusted networks
- Monitor vendor communications for firmware updates addressing this vulnerability
Patch Information
No vendor advisory or patch information was available at the time of publication. Organizations should monitor ALGO Communications for security updates addressing CVE-2026-0793. Refer to the Zero Day Initiative Advisory ZDI-26-015 for additional details and updates on vendor response.
Workarounds
- Implement strict firewall rules to limit network access to ALGO 8180 devices to authorized management stations only
- Place vulnerable devices on isolated network segments with no direct internet exposure
- Consider disabling InformaCast functionality until a patch is available if the feature is not essential
# Example firewall rule to restrict access to ALGO 8180 devices
# Adjust IP addresses and ports according to your environment
iptables -A INPUT -d <ALGO_DEVICE_IP> -s <TRUSTED_MANAGEMENT_IP> -j ACCEPT
iptables -A INPUT -d <ALGO_DEVICE_IP> -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
