CVE-2026-34956

Katalog CVE

CVSS 5.9 · Medium EPSS 0,64%

Kerentanan Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'). Skor CVSS 3.1 5.9 (Medium) menurut redhat.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

5 Mei 2026

Terakhir diubah

1 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

5.9 (Medium), sumber redhat.com
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

EPSS (30 hari)

0,64% peluang dieksploitasi; lebih tinggi dari 49,0% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• 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