---
id: "CVE-2019-7256"
kind: "vulnerability"
aliases: ["CVE-2019-7256"]
title: "Linear eMerge E3-Series devices allow Command Injections"
severity: "critical"
cvss: 10.0
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Nice Linear eMerge E3-Series", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "nortekcontrol linear emerge essential firmware", "fixed": [], "affected": "<= 1.00-06", "ecosystem": "vendor"}, {"name": "nortekcontrol linear emerge elite firmware", "fixed": [], "affected": "<= 1.00-06", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["access-control", "emerge-e3", "exploited", "infrastructure", "nice-linear", "self-hosted"]
not_affected_if: ["unknown"]
published_at: "2019-07-02T19:15:11+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T22:29:05+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-7256", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-7256", "first_seen_at": "2026-10-23T22:29:05+00:00"}]
---

# Linear eMerge E3-Series devices allow Command Injections

Nice Linear eMerge E3-Series access control controllers contain an OS command injection flaw. An attacker can send crafted input to run operating system commands on the device.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Nice Linear eMerge E3-Series affected ? fixed ?
- vendor:nortekcontrol linear emerge essential firmware affected <= 1.00-06 fixed ?
- vendor:nortekcontrol linear emerge elite firmware affected <= 1.00-06 fixed ?

## Fix

Contact the vendor (Nice Linear) for firmware remediation guidance, per their advisory; CISA lists no fixed version.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-7256
- 2026-10-23T22:29:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2019-7256

## From the sources

Nice Linear eMerge E3-Series contains an OS command injection vulnerability that allows an attacker to conduct remote code execution.

CISA required action: Contact the vendor for guidance on remediating firmware, per their advisory.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_