CVE-2026-64609

critical · 9.1

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.

9.1

CVSS

0.8%

EPSS (exploit prob.)

54th

EPSS percentile

2026-07-21

Published

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

Weaknesses

CWE-125

Affected products

Vendor	Product	Affected versions
apache	fory	>= 0.5.0, < 1.4.0

Check a specific version with /api/v1/cve/match.

References

https://lists.apache.org/thread/rdv22ks3b0cxh0r52w3ghxgkxqso3f1b
http://www.openwall.com/lists/oss-security/2026/07/21/6

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-64609