CVE-2025-15155 is a stack-based buffer overflow vulnerability found in the floooh sokol library, specifically in the _sg_pipeline_desc_defaults function within sokol_gfx.h. This function is responsible for setting default values in pipeline descriptors used in graphics rendering contexts. The vulnerability arises from improper handling of input data that leads to overwriting the stack memory, which can corrupt the execution flow. Since the attack vector is local, an attacker must have some level of access to the system to exploit this flaw. The vulnerability does not require user interaction and can be triggered with low privileges, increasing the risk of exploitation by insider threats or through compromised local accounts. The CVSS 4.8 score reflects the medium severity, considering the local attack vector and limited scope of impact. The product lacks formal versioning, complicating identification of affected releases, but a patch has been identified (commit 5d11344150973f15e16d3ec4ee7550a73fb995e0) that corrects the issue. No known exploits are currently in the wild, but the exploit code is publicly available, increasing the risk of future attacks. The vulnerability could lead to application crashes, denial of service, or potentially arbitrary code execution if exploited successfully, impacting software stability and security.

For European organizations, the impact of CVE-2025-15155 depends largely on the extent of floooh sokol library usage, particularly in software development, embedded systems, or graphics-intensive applications. Exploitation could allow local attackers to escalate privileges or disrupt critical applications by causing crashes or executing arbitrary code. This is especially concerning for industries relying on embedded graphics, gaming, or real-time rendering solutions, where stability and security are paramount. The local attack requirement limits remote exploitation, but insider threats or compromised user accounts could leverage this vulnerability. The lack of versioning complicates vulnerability management and patch deployment, potentially delaying remediation. Organizations failing to patch may face increased risk of system instability, data corruption, or unauthorized code execution, which could lead to operational disruptions or data breaches. Given the public availability of exploit code, the window for exploitation is widening, necessitating prompt action.

European organizations should first identify all instances of the floooh sokol library within their software stacks, especially those involving sokol_gfx.h. Since the product lacks formal versioning, source code audits and dependency analysis tools should be employed to detect the vulnerable commit (16cbcc864012898793cd2bc57f802499a264ea40) or earlier. Applying the patch identified by commit 5d11344150973f15e16d3ec4ee7550a73fb995e0 is critical to remediate the vulnerability. Additionally, organizations should enforce strict access controls to limit local user privileges and monitor for unusual local activity that could indicate exploitation attempts. Employing runtime protections such as stack canaries, address space layout randomization (ASLR), and control-flow integrity (CFI) can help mitigate exploitation impact. Regularly updating development dependencies and integrating security testing into the software development lifecycle will reduce future risks. Finally, educating developers about secure coding practices related to buffer management in graphics libraries can prevent similar vulnerabilities.