Cloudanix VulnDB

CVE-2026-53792

Medium · 6.5

CVSS

6.5

EPSS

0.3%

Published

Aug 13, 2026

CISA due date

—

The record

rsync before 3.5.0 contains an out-of-bounds read vulnerability in the sender-side block matching logic that allows a malicious receiver to trigger memory access before the start of an allocated buffer by sending a crafted checksum block with a length of zero. Attackers can send a specially crafted checksum set containing a zero-length block to cause a negative offset calculation during delta computation, resulting in an out-of-bounds read of file data buffer memory on the sender side.

Affected packages

Ecosystem Package Introduced Fixed

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