Vulnerability Details CVE-2026-64609
Out-of-bounds read via sun.misc.Unsafe in Apache Fory. When out-of-band zero-copy deserialization is used, readAlignedVarUint() can read beyond the bounds of the underlying buffer. Out-of-band zero-copy deserialization is an opt-in feature; applications that do not use it are not affected.
This issue affects Apache Fory (formerly Apache Fury): from 0.5.0 before 1.4.0. Versions before 0.11.0 were published under the Maven coordinates org.apache.fury:fury-core.
Users are recommended to upgrade to version 1.4.0, which fixes the issue.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 27.0%
CVSS Severity
CVSS v3 Score 9.1
Products affected by CVE-2026-64609
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cpe:2.3:a:apache:fory:0.10.0
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cpe:2.3:a:apache:fory:0.10.1
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cpe:2.3:a:apache:fory:0.10.2
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cpe:2.3:a:apache:fory:0.10.3
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cpe:2.3:a:apache:fory:0.11.0
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cpe:2.3:a:apache:fory:0.11.1
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cpe:2.3:a:apache:fory:0.11.2
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cpe:2.3:a:apache:fory:0.12.0
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cpe:2.3:a:apache:fory:0.12.1
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cpe:2.3:a:apache:fory:0.12.2
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cpe:2.3:a:apache:fory:0.12.3
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cpe:2.3:a:apache:fory:0.13.0
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cpe:2.3:a:apache:fory:0.13.1
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cpe:2.3:a:apache:fory:0.13.2
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cpe:2.3:a:apache:fory:0.14.0
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cpe:2.3:a:apache:fory:0.14.1
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cpe:2.3:a:apache:fory:0.15.0
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cpe:2.3:a:apache:fory:0.16.0
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cpe:2.3:a:apache:fory:0.17.0
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cpe:2.3:a:apache:fory:0.5.0
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cpe:2.3:a:apache:fory:0.5.1
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cpe:2.3:a:apache:fory:0.6.0
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cpe:2.3:a:apache:fory:0.7.0
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cpe:2.3:a:apache:fory:0.7.1
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cpe:2.3:a:apache:fory:0.8.0
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cpe:2.3:a:apache:fory:0.9.0
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cpe:2.3:a:apache:fory:1.0.0
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cpe:2.3:a:apache:fory:1.1.0
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cpe:2.3:a:apache:fory:1.2.0
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cpe:2.3:a:apache:fory:1.3.0