PT-2026-71629 · Unknown · Rsync Daemon
CVE-2026-53791
·
Published
2026-08-13
·
Updated
2026-09-02
CVSS v4.0
9.1
Critical
| Vector | AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
rsync daemon versions prior to 3.5.0
Description
An IP address spoofing issue exists that allows unauthenticated remote attackers to bypass IP-based access controls. By sending a crafted PROXY protocol header containing a forged source address, attackers connecting directly to the rsync daemon can circumvent hosts allow/deny rules to gain unauthorized access.
Recommendations
Update rsync daemon to version 3.5.0 or later.
Exploit
Fix
Authentication Bypass by Spoofing
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Weakness Enumeration
Related Identifiers
Affected Products
Rsync Daemon