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cpe:2.3:a:open62541_project_/_o6_automation_gmbh:open62541:*:*:*:*:*:*:*:*

part: a version: * update: *

VendorOpen62541 Project / O6 Automation Gmbh (c3a6ac4d-1dcf-5049-bbc4-79cb6012fc38)
ProductOpen62541 (b240d0a9-8704-5c49-bff4-5d2e9b929301)
Edition*
Language*
Software edition*
Target software*
Target hardware*
Other*

Notes

Imported from gcve-enriched-dumps CVE data

PURL mappings

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Vulnerability references

IdentifiercpeApplicabilitySubmitteddb.gcve.eu detailsRationale
CVE:CVE-2026-33592 vulnerable 2026-07-29 00:43:22.379940 FindServers Memory Exhaustion in open62541
HIGH (7.5)
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.
Published: 2026-07-02T07:12:24.250Z
Updated: 2026-07-02T12:30:18.800Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2026-11946 vulnerable 2026-07-29 00:23:31.826981 GetEndpoints Memory Exhaustion in open62541
HIGH (7.5)
An unauthenticated remote attacker can exhaust server memory via the GetEndpoints Discovery Service in open62541. The endpointUrl field of GetEndpointsRequest is not validated for length. An attacker can declare an arbitrarily large string (up to ~4.09 GB via the UInt32 length field) 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 configurations. The issue affects open62541: from 1.4.0 through 1.4.16, from 1.5.0 through 1.5.4, master.
Published: 2026-07-02T10:54:17.782Z
Updated: 2026-07-02T12:15:49.245Z
Reference links
Imported from gcve-enriched-dumps CVE data

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