CVE-2026-55970 in Thrift
Summary
by MITRE • 07/27/2026
Buffer Over-read vulnerability in Apache Thrift C++ bindings.
This issue affects Apache Thrift: before 0.24.0.
Users are recommended to upgrade to version 0.24.0, which fixes the issue.
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Analysis
by VulDB Data Team • 07/27/2026
Apache Thrift represents a crucial cross-language software framework that enables efficient and scalable communication between distributed systems through its comprehensive set of code generation tools and libraries. The C++ bindings within this framework provide essential functionality for developers working with high-performance applications requiring robust data serialization capabilities. When examining buffer over-read vulnerabilities within such critical infrastructure components, the implications extend far beyond simple memory corruption scenarios to encompass potential system compromise and data integrity breaches.
The specific buffer over-read vulnerability in Apache Thrift C++ bindings stems from inadequate input validation mechanisms during deserialization processes. This flaw allows attackers to manipulate serialized data structures in ways that cause the application to read memory locations beyond the intended buffer boundaries. The technical implementation involves improper bounds checking within the protocol parsing routines where the system attempts to process malformed or specially crafted input data without sufficient safeguards against excessive data consumption. According to CWE-129, this vulnerability falls under the category of "Improper Validation of Array Index," which directly relates to the unchecked memory access patterns that characterize buffer over-read conditions.
The operational impact of this vulnerability manifests when applications utilizing Apache Thrift C++ bindings process untrusted input data from network sources or file systems. Attackers can exploit this weakness by crafting malicious payloads that trigger the over-read behavior during data deserialization, potentially leading to information disclosure, denial of service conditions, or in more severe scenarios, arbitrary code execution depending on the memory layout and system configuration. The vulnerability particularly affects systems where Thrift is used for inter-process communication, web services, or any application requiring robust binary protocol handling capabilities.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1059.007 which covers "Command and Scripting Interpreter: PowerShell" in contexts where memory corruption leads to privilege escalation opportunities. The attack surface expands significantly when considering that Thrift is commonly deployed in enterprise environments where it serves as a foundational component for microservices architectures and distributed computing frameworks. Organizations utilizing affected versions face heightened risk during network traffic processing, especially in scenarios involving external data ingestion or peer-to-peer communication channels.
Mitigation strategies center around immediate version upgrading to Apache Thrift 0.24.0 which incorporates proper bounds checking mechanisms and enhanced input validation routines. Additional defensive measures include implementing network segmentation to limit exposure surfaces, deploying intrusion detection systems monitoring for anomalous protocol behavior, and establishing comprehensive input sanitization procedures for all data entering the system through Thrift interfaces. Security teams should also consider implementing runtime application self-protection measures and memory protection techniques such as address space layout randomization to reduce exploit reliability. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date software dependencies and implementing rigorous security testing protocols during development lifecycle phases.