CVE-2025-29364: 
Homebrew vulnerability analysis and mitigation

A buffer overflow vulnerability has been identified in spimsimulator spim version 9.1.24 and earlier, tracked as CVE-2025-29364. The vulnerability exists in the READSYSCALL and WRITESYSCALL system calls, where the application's verification of memory read/write operations can be bypassed. The vulnerability was disclosed on August 28, 2025, affecting the SPIM MIPS Simulator software (NVD, GitHub POC).

The vulnerability stems from a design flaw in the memory boundary checks within the READSYSCALL and WRITESYSCALL system calls. By configuring the starting and ending addresses for memory read/write operations to point to different valid memory segments within the virtual machine, an attacker can circumvent the security checks. The vulnerability has been assigned a CVSS v3.1 base score of 6.5 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L. The issue is classified under CWE-121 (Stack-based Buffer Overflow) (NVD).

When successfully exploited, this vulnerability allows attackers to perform out-of-bounds read and write operations, potentially leading to memory corruption on the host machine. The impact includes the possibility of reading sensitive information from memory and potential simulator escape, which could compromise the security of the host system (GitHub Details).

Users are advised to upgrade to a version newer than 9.1.24 once available. As of the disclosure date, no official patch has been released. Organizations using affected versions should consider implementing additional security controls or monitoring mechanisms to detect potential exploitation attempts (NVD).