CVE-2026-56003: libxfont from 2.0.0 (inclusive), before 2.0.8 (exclusive); +1 more affected products

CVE-2026-56003. CVSS 3.1 base score 8.8 (HIGH, NVD). EPSS 0.004 (percentile 0.33988), scored 25-Oct-2026.

Affected technology

libxfont · from 2.0.0 (inclusive), before 2.0.8 (exclusive)
x

libXfont2 · 0 to before 2.0.8
X.Org

Description’s affected range: before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 8.5/10) rates confidentiality, integrity and availability impact as high. NVD’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 21:45 UTC

CWE: CWE-122
CCR priority: 35.3 /100 (P4)
CVSS 3.1: 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · NVD
EPSS: 0.004 · percentile 0.33988 · 2026-10-25
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-25 21:44:36.062275+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-56003.html