Dashboard / CVE-2026-34956

CVE-2026-34956

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 62/100
Published: 2026-05-05 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

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.

Weakness Classification (1)

References & Advisories (3)

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.40%
Raw Score 0.004050
Percentile 34.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00405
2026-10-28
0.00405

Intelligence Sources

nvd ref →

External Links