CVE-2026-55971 is a heap-based buffer overflow vulnerability in the Apache Thrift C++ bindings. It affects all versions prior to 0.24.0. The vulnerability allows an unauthenticated attacker to potentially execute arbitrary code or cause a denial of service due to memory corruption. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. The Apache Software Foundation has addressed this issue in version 0.24.0.

Successful exploitation of this vulnerability could lead to arbitrary code execution or denial of service on affected systems running vulnerable versions of Apache Thrift C++ bindings. The critical CVSS score reflects the potential for severe impact without requiring authentication or user interaction.

Users should upgrade to Apache Thrift version 0.24.0, which contains the official fix for this vulnerability. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory recommending upgrade to 0.24.0.