CVE-2026-24809 is a heap-buffer overflow vulnerability classified under CWE-787, found in the praydog REFramework, specifically in the luaG_runerror function within the lua debugging source file ldebug.c. This vulnerability occurs when a recursive error triggers an out-of-bounds write on the heap, leading to memory corruption. The affected versions are all prior to 1.5.5, with the issue stemming from improper bounds checking during error handling in the Lua interpreter embedded in the framework. The CVSS 4.0 vector indicates local attack vector (AV:L), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), no confidentiality or integrity impact, but high availability impact (VA:H), and requires local user authentication (AU:Y). The vulnerability can cause denial of service or potentially enable code execution in the context of the local user, though exploitation complexity and scope are limited. No public exploits or patches are currently available, but the vulnerability is published and recognized by GovTech CSG. The REFramework is used primarily in automation and modding contexts, often by developers or advanced users, which limits the exposure to local environments.

For European organizations, the primary impact of CVE-2026-24809 lies in potential denial of service or local code execution on systems running vulnerable versions of praydog REFramework. This could disrupt development pipelines, automation tasks, or modding environments, leading to productivity loss or localized system compromise. Since exploitation requires local access and no network vector is present, remote attacks are unlikely, reducing the risk to enterprise-wide infrastructure. However, insider threats or compromised local accounts could leverage this vulnerability to escalate privileges or destabilize critical development environments. Organizations relying on praydog REFramework for automation or software development, particularly in sectors like gaming, software engineering, or industrial automation, may face operational disruptions. The absence of known exploits and patches currently limits immediate risk but necessitates proactive mitigation to prevent future exploitation.

To mitigate CVE-2026-24809, organizations should prioritize upgrading praydog REFramework to version 1.5.5 or later once the patch is released. Until then, restrict local access to systems running the vulnerable framework to trusted users only and enforce strict access controls. Implement monitoring for unusual application crashes or error recursion patterns that could indicate exploitation attempts. Employ application whitelisting and sandboxing to limit the impact of potential memory corruption. Conduct code reviews and static analysis on Lua scripts used within the framework to detect recursive error conditions. Educate developers and system administrators about the vulnerability and the importance of applying updates promptly. Additionally, maintain up-to-date backups and incident response plans to quickly recover from any denial of service or compromise resulting from exploitation.