CVE-2026-40228
Modified Modified - Updated After Analysis
ANSI Escape Injection in systemd-journald Allows Terminal Manipulation

Publication date: 2026-04-10

Last updated on: 2026-05-05

Assigner: MITRE

Description
In systemd 259, systemd-journald can send ANSI escape sequences to the terminals of arbitrary users when a "logger -p emerg" command is executed, if ForwardToWall=yes is set.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-04-10
Last Modified
2026-05-05
Generated
2026-06-16
AI Q&A
2026-04-10
EPSS Evaluated
2026-06-15
NVD
CVE-2026-40228
EUVD
EUVD-2026-21498
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
systemd_project systemd 259
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-669 The product does not properly transfer a resource/behavior to another sphere, or improperly imports a resource/behavior from another sphere, in a manner that provides unintended control over that resource.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability exists in systemd version 259 where the systemd-journald component can send ANSI escape sequences to the terminals of arbitrary users. This occurs when the "logger -p emerg" command is executed and the ForwardToWall=yes setting is enabled.

Impact Analysis

The vulnerability can impact users by allowing systemd-journald to send potentially malicious ANSI escape sequences to other users' terminals. This could lead to unintended terminal behavior or information display manipulation, although the CVSS score indicates a low severity with no confidentiality or availability impact, but some integrity impact.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-40228. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart