CVE-2026-15548

Shibby · Tomato

Shibby Tomato firmware versions 1.0 through 1.7 are vulnerable to stack-based buffer overflows and memory corruption, which can lead to system crashes or arbitrary code execution.

Executive summary

Critical memory corruption vulnerabilities in Shibby Tomato firmware versions 1.0–1.7 allow authenticated attackers to trigger buffer overflows and potentially gain full control of the device.

Vulnerability

This is a combination of Stack-based Buffer Overflow (CWE-121) and Memory Corruption (CWE-119). These flaws allow an authenticated user to send specially crafted packets that corrupt system memory.

Business impact

Exploitation of these vulnerabilities can lead to a complete denial-of-service (DoS) or remote code execution on the router or network appliance. Given the CVSS score of 8.8, this is a high-severity issue that could grant an attacker persistent access to the network, facilitating lateral movement and data interception.

Remediation

Immediate Action: Check for and apply the latest available firmware updates from the vendor or migrate to a supported, patched version.

Proactive Monitoring: Monitor device traffic for anomalous packet patterns and unexpected reboots, which are common indicators of memory corruption attempts.

Compensating Controls: Restrict administrative access to the device interface to trusted management subnets and disable unnecessary services that may provide an attack surface.

Exploitation status

Public Exploit Available: Unknown.

Analyst recommendation

Due to the nature of firmware-level vulnerabilities, the risk of device compromise is significant. Affected users must monitor the vendor's security portal for a patch and apply it immediately upon availability. If no patch is released, consider replacing the hardware with a supported, secure alternative.