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Synology stale DNS allows practical interception of traffic from vulnerable DSM clients

lowfulldisclosurePublished 2026-07-23

<p>Posted by shed riot on Jul 22</p># Synology stale DNS allows practical interception of traffic from<br /> vulnerable DSM clients<br /> <br /> Vendor case: 904909<br /> Suggested severity: High<br /> <br /> ## Customer advisory<br /> <br /> Synology customers using the affected DSM and Relayd versions listed below<br /> should upgrade immediately.<br /> <br /> The relevant man-in-the-middle vuln

MITRE ATT&CK techniques

Original source: https://seclists.org/fulldisclosure/2026/Jul/28