CVE-2026-64606

⛔ critical

Summary

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

EPSS Score

0.6

Exploit Probability

Published Date

2026-07-21

First Seen: 2026-07-22

📊 Relative Risk Intelligence

This CVE is Very High Risk - more severe than 90.5% of all 361,609 vulnerabilities in our database.

#34,236

Top 10% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jul 21, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Total

Complete system compromise possible

🏆 Discovered By

Charles Vosburgh (reporter)

SSVC data provided by CISA

Last Modified 2026-07-27

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-502

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
apache	fory	Affected	> 0.5.0 < 1.4.0

🔗 References 2

https://lists.apache.org/thread/py6fbvm9nk1gxdd85rbz...

Vendor Advisory Issue Tracking

http://www.openwall.com/lists/oss-security/2026/07/21/4

Third Party Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-71558	⛔ critical	9.8	0.7	Heap type confusion vulnerability in Apache Fory C++ deserialization. This issue affects Apache Fory C++ versions from ...	2026-08-07
CVE-2026-71559	⚠️ high	7.5	0.6	Deserialization of Untrusted Data vulnerability in the Go implementation of Apache Fory allows an attacker to cause a de...	2026-08-07
CVE-2026-71560	⛔ critical	9.1	0.6	Out-of-bounds Read vulnerability in Apache Fory C++ deserialization. This issue affects Apache Fory C++ versions from 0...	2026-08-07
CVE-2026-64608	⛔ critical	9.8	0.5	Heap type confusion and out-of-bounds read/write in the Apache Fory C++ implementation. When deserializing data in compa...	2026-07-21
CVE-2026-64609	⛔ critical	9.1	0.5	Out-of-bounds read via sun.misc.Unsafe in Apache Fory. When out-of-band zero-copy deserialization is used, readAlignedVa...	2026-07-21
CVE-2026-60080	⚠️ high	7.3	0.4	Use After Free vulnerability in the Rust deserialization logic of Apache Fory. This issue affects Apache Fory from 0.13....	2026-07-21

These CVEs affect the same products