CVE-2026-56002

FAUCET Score

A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8 allows attackers authenticated as X client to execute code within the X server.

First published: Jul 8, 2026Last modified: Jul 8, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 2.0.8CPE matchmatch criteria	cpe:2.3:a:x:libxfont::::::::

CVSS Data

CVSS version used by this source: 3.1

8.5HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

1.8

Impact Score

6.0

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.41%

Probability of exploitation in next 30 days

EPSS Percentile

33.6%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0041 is in the 21st percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

microsoftpatch availablevia msrc

Product: azl3 libXfont2 2.0.6-1 on Azure Linux 3.0Fixed in: 2.0.8-1

microsoftpatch availablevia msrc

Product: 21567-17084Fixed in: 2.0.8-1