CVE-2026-55971 Apache Software Foundation CVE debrief

Who should care

Users of Apache Thrift C++ bindings before version 0.24.0 should be aware of this vulnerability and take steps to upgrade. Affected operator, platform, vulnerability-management, and security-team impact should be reviewed.

Technical summary

A Heap-based Buffer Overflow vulnerability exists in Apache Thrift C++ bindings. This issue affects Apache Thrift before version 0.24.0. The vulnerability has a CVSS score of 9.3 and is considered CRITICAL. Users of Apache Thrift C++ bindings before version 0.24.0 should be aware of this vulnerability and take steps to upgrade. Affected deployments should be identified, and owners assigned for follow-up. Defenders should verify affected Apache Thrift C++ bindings deployments and review vendor guidance. Evidence is limited to CVE and NVD details, so verification of affected scope and severity is recommended.

Defensive priority

High priority should be given to upgrading Apache Thrift C++ bindings to version 0.24.0 or later.

Recommended defensive actions

• Upgrade Apache Thrift C++ bindings to version 0.24.0 or later.
• Review and update affected systems and applications.
• Monitor for potential exploitation attempts.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-07-27T12:16:46.110Z and has not been modified since then. The NVD entry is currently 9.3 CRITICAL. Evidence is limited to CVE and NVD details. Defenders should verify affected Apache Thrift C++ bindings deployments and review vendor guidance.

Official resources