CVE-2026-34956 — Openvswitch: open vswitch: denial of service via malformed ftp epasv command
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 cra…
Published: 2026-05-05 · CVSS: 5.9 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7