CVE-2025-63745 identifies a NULL pointer dereference vulnerability in radare2, an open-source reverse engineering framework widely used for binary analysis and security research. The flaw resides in the info() function within the bin_ne.c source file, which handles parsing of NE (New Executable) binary format files. When radare2 processes a specially crafted binary input designed to exploit this vulnerability, it dereferences a NULL pointer, causing a segmentation fault and crashing the application. This results in a denial of service condition, preventing the tool from completing its analysis. The vulnerability affects radare2 version 6.0.5 and earlier. There is no evidence of exploitation in the wild, and no official CVSS score has been assigned. The attack vector requires an attacker to supply malformed binary data to the tool, which is typically done by users running radare2 on untrusted or suspicious binaries. Since radare2 is often used in security research, malware analysis, and reverse engineering, this vulnerability could disrupt workflows and analysis capabilities. The lack of authentication or complex prerequisites makes the vulnerability relatively easy to trigger, but its impact is limited to denial of service rather than code execution or data compromise. No patches or fixes have been linked yet, so users should monitor for updates or consider manual code review and mitigation.

For European organizations, the primary impact of CVE-2025-63745 is operational disruption due to denial of service when using radare2 for binary analysis tasks. Organizations involved in cybersecurity research, malware analysis, digital forensics, and software vulnerability assessments that rely on radare2 could face interruptions in their workflows. This could delay incident response or vulnerability discovery processes. Although the vulnerability does not lead to code execution or data leakage, the inability to analyze binaries effectively can indirectly affect security posture. The impact is more pronounced for entities handling large volumes of suspicious binaries or those integrating radare2 into automated pipelines. Since radare2 is open-source and widely used globally, European cybersecurity teams and research institutions are at risk if they use vulnerable versions. The lack of known exploits reduces immediate risk, but the ease of triggering the fault means attackers could cause denial of service in targeted scenarios. Overall, the impact is moderate but relevant to specialized users.

To mitigate CVE-2025-63745, European organizations should first verify if they use radare2 version 6.0.5 or earlier. If so, they should monitor the official radare2 repositories and security advisories for patches addressing this vulnerability and apply updates promptly once available. In the interim, users can avoid processing untrusted or malformed NE format binaries or implement input validation and sanitization before analysis. For organizations with development capabilities, reviewing and patching the info() function in bin_ne.c to add NULL pointer checks and robust error handling can prevent crashes. Incorporating radare2 usage within sandboxed or isolated environments can limit the impact of crashes on broader systems. Additionally, integrating fallback mechanisms or alternative analysis tools can maintain operational continuity. Security teams should also educate users about the risk of denial of service from crafted inputs and enforce strict controls on binary sources. Finally, logging and monitoring radare2 crashes can help detect exploitation attempts early.