SEPTEMBER 23, 2026
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Case File

CVE-2026-34956

MEDIUM · CVSS 5.9 EPSS 0.40%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-05 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.9. It may be remotely exploitable. It may lead to a denial-of-service condition.

CVE
CVE-2026-34956
Severity
MEDIUM
CVSS
5.9
EPSS
0.40%

Original NVD 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.