CVE-2026-48800Public exploitHinoki check available

Arbitrary code execution via shortcuts.xml command injection

Published Jun 26, 2026 · Updated Jun 26, 2026

OS command injection in Notepad++ 8.9.6 and earlier allows local users to execute arbitrary code through a crafted shortcuts.xml file. feedUserCmds stores an unvalidated Command value, and Command::run passes that value to ShellExecute as the executable path. Exploitation requires control of the configuration file or settings directory and a user selecting the injected Run menu entry; execution occurs in that user's context and the entry can persist across reboots.

CVSS severity7.8
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

OS command injection in Notepad++ 8.9.6 and earlier allows local users to execute arbitrary code through a crafted shortcuts.xml file. feedUserCmds stores an unvalidated Command value, and Command::run passes that value to ShellExecute as the executable path. Exploitation requires control of the configuration file or settings directory and a user selecting the injected Run menu entry; execution occurs in that user's context and the entry can persist across reboots.

The record

CVE
CVE-2026-48800
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
Notepad++
Product
Notepad++
Classifications
CWE-78, T1059
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 8.9.6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Notepad++ · Notepad++version=< 8.9.6.1

Published CVSS scores

7.8GitHubCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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