CVE-2026-70464
High
Description
rsync daemon 2.0.0 before 3.5.0 contains a denial of service vulnerability that allows unauthenticated remote attackers to exhaust daemon connection slots by stalling the handshake process before or after module selection without triggering the I/O timeout. Attackers can open many simultaneous connections and trickle data at the minimum rate to avoid timeout, or stall entirely before module selection where no timeout applies, consuming all available connection slots and denying service to legitimate clients.
SeverityHigh
CVSS7.5
Exploit probability—
ProductSamba Rsync
PublishedAug 13, 2026
First seenAug 13, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- samba rsync3.5.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| samba rsync | 2.0.0 ≤ v < 3.5.0 | 3.5.0 |
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