Filtered by vendor Open62541 Project / O6 Automation Gmbh Subscriptions
Filtered by product Open62541 Subscriptions
Total 1 CVE
CVE Vendors Products Updated CVSS v3.1
CVE-2026-33592 1 Open62541 Project / O6 Automation Gmbh 1 Open62541 2026-07-06 7.5 High
An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service in open62541. The serverUris field of FindServersRequest is not validated for length or array size. An attacker can declare an arbitrarily large string (up to ~3.9 GB) delivered across intermediate chunks without ever sending the final chunk. The server buffers all chunks in RAM indefinitely until the SecureChannel times out. The attack is pre-session and bypasses all encryption configuration. The issue affects open62541: from 1.4.0 through 1.4.16, from 1.5.0 through 1.5.4, master.