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CVE-2026-34956

5.9 medium SSVC exploitation: none Awaiting Analysis
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 5.9NVD modified 2026-10-26 19:10

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 3