PT-2026-54970 · Open62541 Project / O6 Automation Gmbh · Open62541

Lorenzo Cannella · Publicado 2026-07-02 · Atualizado 2026-07-02 · CVE-2026-11946

NVD

CVSS v3.1

7.5

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Correção

Allocation of Resources Without Limits

Enumeração de Fraquezas

CWE-789

CWE-770

Identificadores relacionados

CVE-2026-11946

Produtos afetados

Open62541

Referências · 4

• https://github.com/open62541/open62541/pull/8142/changes/d253818d6c5e870e1db0e360b18138c8bdc809ae · Correção
• https://github.com/open62541/open62541/pull/8142 · Correção
• https://github.com/open62541/open62541 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-11946 · Nota de Segurança