CVE-2026-53792 — rsync < 3.5.0 Out-of-Bounds Read via Zero-Length Checksum Block
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 star…
Published: 2026-08-13 · CVSS: 7.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7