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CVE-2026-64608

Apache Fory insecure deserialization

9.8 CRITICALEPSS 0.81%
  1. Published21 Jul 2026

Description

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. This 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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Fory≥ 0.14.0 < 1.4.0

Remediation

Fixed in
Apache Fory≥ 1.4.0

References

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Frequently asked

Is CVE-2026-64608 being actively exploited?

CVE-2026-64608 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.81%.

How severe is CVE-2026-64608?

CVE-2026-64608 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.81% probability of exploitation.

Which products are affected by CVE-2026-64608?

Affected products include Apache Fory.

How do I fix CVE-2026-64608?

Upgrade affected software to a fixed version, for example Apache Fory 1.4.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-64608 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.