CVE-2026-43846 in ADAM-3600
Summary
by MITRE • 10/20/2026
A stack-based buffer overflow vulnerability in a non-functional feature could allow an authenticated attacker to achieve code execution.
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Analysis
by VulDB Data Team • 10/20/2026
The identified vulnerability represents a classic memory corruption flaw classified under CWE-121, specifically involving a stack-based buffer overflow. This type of defect occurs when a program writes more data to a fixed-length block of memory stored on the call stack than it is allocated to hold. In this specific instance, the vulnerable code resides within a feature that is currently non-functional or disabled in production environments. Despite its inactive state, the presence of such flawed logic indicates a lapse in secure coding practices during development and testing phases. The vulnerability allows for an out-of-bounds write operation where user-controlled input exceeds the bounds of the allocated buffer on the stack, overwriting adjacent memory locations including return addresses, saved frame pointers, or other critical control data structures essential for program execution flow.
An authenticated attacker can exploit this condition by crafting a malicious payload designed to overwrite the instruction pointer with an address pointing to shellcode injected into the same buffer or elsewhere in memory. Because authentication is required prior to exploitation, the attack surface is limited to users who have valid credentials within the system. This requirement significantly reduces the risk of remote unauthenticated attacks but does not eliminate the threat from insider threats or compromised accounts. The successful exploitation leads directly to arbitrary code execution with the privileges of the vulnerable process, which aligns with MITRE ATT&CK technique T1059 Command and Scripting Interpreter if the executed code invokes system commands, or more broadly under privilege escalation vectors depending on the context in which the application runs.
The operational impact of this vulnerability is severe due to the potential for complete system compromise. Once an attacker achieves code execution, they can manipulate data, steal sensitive information, install backdoors, or use the compromised host as a pivot point for further network intrusion. Although the feature itself is non-functional, the underlying memory management flaw remains present in the binary or source code base. This highlights that disabling a feature does not necessarily remove associated security risks if the vulnerable code paths are still compiled into the final build and accessible through other means or future re-enabling of the feature. The existence of such vulnerabilities often points to insufficient input validation, lack of bounds checking, or use of unsafe legacy functions like strcpy without proper length verification.
Mitigation strategies must address both immediate remediation and long-term secure development lifecycle improvements. The primary fix involves modifying the vulnerable code segment to implement strict boundary checks before copying data into stack-allocated buffers. Developers should replace unsafe string handling functions with safer alternatives that enforce length limits, such as strncpy or snprintf in C/C++ environments. Additionally, enabling compiler-based security features like Stack Canaries (Stack Smashing Protection), Address Space Layout Randomization, and Data Execution Prevention can mitigate the likelihood of successful exploitation by making it harder to predict memory layouts and preventing execution from stack regions. From a broader perspective, organizations should integrate static application security testing tools into their CI/CD pipelines to detect such buffer overflows early in development. Regular code reviews focusing on memory safety and adherence to secure coding standards like OWASP or CERT C/C++ are essential to prevent similar defects in future releases.