# CVE-2026-73250 — notepad-plus-plus

> As of 2026-08-11, CVE-2026-73250 is a Medium-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in notepad-plus-plus, CVSS v4.0 5.4, EPSS 0.1% (2.9th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-73250 as of 2026-08-11; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-11

## What is CVE-2026-73250?

Notepad++ is a free and open-source source code editor. Prior to 8.9.7, the Notepad++ Windows 11 x64 and ARM64 installer passes the attacker-influenced installation directory `$INSTDIR` from PowerEditor/installer/nppSetup.nsi into a PowerShell `-Command` string used by RegisterMSIX to invoke Add-AppxPackage, allowing PowerShell subexpression syntax such as `$()` in the installation path to execute commands in the installer's security context when the context menu component is selected. This issue is fixed in version 8.9.7.

The record classifies CVE-2026-73250 under weakness class [CWE-77](https://intel.threadlinqs.com/cwe/CWE-77). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 55 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 5.4 — Medium (derived from score) (`CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 2.9% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 2.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-11

## Is CVE-2026-73250 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [notepad-plus-plus](https://intel.threadlinqs.com/vendors/notepad-plus-plus): notepad-plus-plus

## How to fix CVE-2026-73250

No vendor patch reference has been recorded for CVE-2026-73250 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-73250

No threat campaign in the Threadlinqs corpus currently references CVE-2026-73250, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-08-13. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-gp2r-262h-9hgf)

**Other references**

- [github.com](https://github.com/notepad-plus-plus/notepad-plus-plus/commit/3764d5b72664ef95421bc53bcb204f9b977d346b)
- [github.com (v8.9)](https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.7)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-73250
Full detection coverage and IOCs for threats exploiting CVE-2026-73250 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp