Security Advisory

CVE-2026-34956

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-05 15:45:04

Last updated 2026-05-06 14:17:37

Assigner redhat

CVSS score not scored

State PUBLISHED

Description

A flaw was found in Open vSwitch. When Open vSwitch is configured with a conntrack flow using FTP helpers over the userspace datapath, a remote attacker can send a specially crafted FTP stream with an EPASV command exceeding 255 characters. This heap access error can lead to a crash, resulting in a Denial of Service (DoS) for the affected system.

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