CVE-2026-24809 in REFramework
Summary
by MITRE • 01/27/2026
An issue from the component luaG_runerror in dependencies/lua/src/ldebug.c in praydog/REFramework version before 1.5.5 leads to a heap-buffer overflow when a recursive error occurs.
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Analysis
by VulDB Data Team • 01/27/2026
The vulnerability identified as CVE-2026-24809 represents a critical heap-buffer overflow condition within the luaG_runerror function located in the dependencies/lua/src/ldebug.c file of the praydog/REFramework software. This issue specifically manifests when recursive error conditions occur during runtime execution, creating a scenario where memory corruption can take place through improper buffer handling. The vulnerability affects versions of REFramework prior to 1.5.5, indicating that the developers identified and addressed this flaw in their subsequent release. The heap-buffer overflow vulnerability arises from inadequate bounds checking when processing error messages that occur in recursive contexts, allowing attackers to potentially overwrite adjacent memory regions with malicious data. This type of vulnerability falls under the CWE-121 category of stack-based buffer overflow, though the heap context specifically indicates memory allocation issues in the heap rather than stack memory. The recursive error scenario typically occurs when an error handler itself encounters an error, creating a chain reaction that the current implementation fails to properly manage.
The operational impact of this vulnerability extends significantly in environments where REFramework is utilized for game modification or debugging purposes. When exploited, the heap-buffer overflow could enable arbitrary code execution, memory disclosure, or system instability that might compromise the integrity of the target system. Attackers could potentially leverage this vulnerability to inject malicious code into the application's memory space, particularly when the framework is used in conjunction with games or applications that process untrusted input data. The nature of the vulnerability makes it particularly dangerous in gaming environments where REFramework is commonly deployed for modding activities, as these scenarios often involve complex recursive operations and error handling that could trigger the overflow condition. The vulnerability's exploitation requires a specific sequence of events involving recursive error conditions, but once triggered, it could provide attackers with significant control over the application's execution flow and memory management.
Mitigation strategies for CVE-2026-24809 primarily involve upgrading to REFramework version 1.5.5 or later, which contains the necessary patches to address the heap-buffer overflow issue. System administrators and developers should also implement runtime monitoring to detect unusual memory access patterns that might indicate exploitation attempts. The fix implemented in version 1.5.5 likely includes proper bounds checking and recursive error handling mechanisms that prevent buffer overflows when error messages are processed in recursive contexts. Additional defensive measures include implementing address space layout randomization, stack canaries, and other exploit mitigations that can reduce the effectiveness of potential exploitation attempts. Organizations should also conduct thorough code reviews of any custom modifications or extensions that utilize the REFramework library to ensure they do not introduce similar buffer overflow vulnerabilities. The vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as exploitation could enable attackers to execute arbitrary commands through memory corruption, and T1566.001 for malicious file for initial access, particularly in gaming environments where modded applications are commonly used. Security teams should monitor for any reports of exploitation attempts and maintain updated threat intelligence regarding this specific vulnerability in gaming and modding communities where REFramework is widely utilized.