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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-53792 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulnCheck
CVSS-B 7.1 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0 VulnCheck
https://github.com/RsyncProject/rsync/security/advisories/GHSA-cg57-rp9g-56hw VulnCheck
https://www.vulncheck.com/advisories/rsync-out-of-bounds-read-via-zero-length-checksum-block VulnCheck

Weakness Enumeration

CWE-ID CWE Name Source
CWE-129 Improper Validation of Array Index VulnCheck  
CWE-787 Out-of-bounds Write VulnCheck  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-53792
NVD Published Date:
08/13/2026
NVD Last Modified:
08/14/2026
Source:
VulnCheck