HIGH 7.1 NVD
CVE-2026-53792
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 acces
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.
References
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-cg57-rp9g-56hw
- https://www.vulncheck.com/advisories/rsync-out-of-bounds-read-via-zero-length-checksum-blo
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-08-13 via NVD.
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