CVE-2026-34956

תיאור (מקור, אנגלית)

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.

מדדים

CVSS 3.1

5.9 (MEDIUM) מקור הציון: CNA CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — סבירות ניצול

0% (אחוזון 000) נכון ל-31/7/2026

CWE

CWE-120

קישורים

• https://access.redhat.com/security/cve/CVE-2026-34956
• https://bugzilla.redhat.com/show_bug.cgi?id=2453459
• http://www.openwall.com/lists/oss-security/2026/03/31/15