Dashboard / CVE-2026-56003

CVE-2026-56003

HIGH
MEDIUM Priority: 0.04 BB Relevance: 68/100
Published: 2026-07-08 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
x libxfont 2.0.0 – 2.0.8

References & Advisories (2)

https://www.openwall.com/lists/oss-security/2026/07/08/1
Mailing List Patch Third Party Advisory

Bug Bounty Relevance

68 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.40%
Raw Score 0.004000
Percentile 34.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00400
2026-10-28
0.00400

Intelligence Sources

nvd ref →

External Links