High 7.5Published Aug 13, 2026

CVE-2026-70464rsync 2.0.0 < 3.5.0 Connection Slot Exhaustion DoS via Handshake Stall

Updated under an hour ago (2026-10-19 06:50 UTC)

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It affects RsyncProject rsync. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for RsyncProject rsync

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Awaiting Analysis
Record last updated: Aug 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

RsyncProject rsync rsyncproject:rsync (from the name)	from 2.0.0 through 3.4.4; 3.5.0 not affected	CNA record

References

https://github.com/RsyncProject/rsync/security/advisories/GHSA-hrwq-ccf7-rw5mvendor-advisory
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0release-notes
https://www.vulncheck.com/advisories/rsync-connection-slot-exhaustion-dos-via-handshake-stallthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.