CVE-2026-64606 — CRITICAL (9.8)

Q: How severe is CVE-2026-64606?

CVE-2026-64606 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-64606?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Fory.

Vulnerability Description

Deserialization of untrusted data vulnerability that may allow class-registration checks to be bypassed during Java lambda deserialization. Only lambda capture class is affected This issue affects Apache Fory: from before 1.4.0. Users are recommended to upgrade to version 1.4.0, which fixes the issue.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Apache	Fory	>= 0.5.0, < 1.4.0

Related Weaknesses (CWE)

CWE-502

References

https://lists.apache.org/thread/py6fbvm9nk1gxdd85rbzbozwzfh0jrscVendor AdvisoryIssue Tracking
http://www.openwall.com/lists/oss-security/2026/07/21/4Third Party Advisory

FAQ

What is CVE-2026-64606?

CVE-2026-64606 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Deserialization of untrusted data vulnerability that may allow class-registration checks to be bypassed during Java lambda deserialization. Only lambda capture class is affected This issue affects A...

How severe is CVE-2026-64606?

CVE-2026-64606 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-64606?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Fory.