CVE-2026-64608 Apache CVE debrief

Who should care

Users of Apache Fory C++ from version 0.14.0 to 1.3.9 should be aware of this vulnerability and take steps to upgrade to version 1.4.0. Operators, platform administrators, vulnerability management teams, and security teams should review the affected scope and take necessary actions. They should also verify affected systems, plan for upgrades, and monitor for potential exploitation attempts.

Technical summary

Heap type confusion and out-of-bounds read/write in the Apache Fory C++ implementation. When deserializing data in compatible mode, the field-skip paths do not correctly validate the declared field types against the actual data, so input with an inconsistent schema can cause type confusion and out-of-bounds memory access. Only the C++ implementation is affected; other language implementations of Apache Fory are not. Affected versions are from 0.14.0 before 1.4.0. The vulnerability can be mitigated by upgrading to version 1.4.0.

Defensive priority

Upgrade to version 1.4.0 to fix the issue.

Recommended defensive actions

• Upgrade to version 1.4.0
• Inventory and check affected systems
• Monitor for potential exploitation attempts
• Review compensating controls for exposed systems
• Check relevant monitoring, detection, and logs for exposed assets
• Track exceptions and retest remediated assets
• Confirm whether affected product deployments exist in managed environments

Evidence notes

The issue affects Apache Fory C++: from 0.14.0 before 1.4.0. Users are recommended to upgrade to version 1.4.0, which fixes the issue. Limited information available. Evidence is limited to public sources and CVE details. Defenders should verify affected systems and plan for upgrades. The CVE record was published on 2026-07-21T10:16:24.923Z and has not been modified since then. This CVE record provides details about the vulnerability, its impact, and recommended actions.

Official resources