---
title: "CVE-2019-7256: Nice Linear eMerge E3-Series OS Command Injection Vulnerability"
url: https://erroneo.us/security/cve/CVE-2019-7256/
description: "CVE-2019-7256 (Nice Linear eMerge E3-Series): Exploited in the wild (CISA KEV). Linear eMerge E3-Series devices allow Command Injections."
type: vulnerability-record
section: "Security Digest"
date_published: 2019-07-02
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2019-7256"
kev: true
cvss: 9.8
epss: 0.97081
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2019-7256: Nice Linear eMerge E3-Series OS Command Injection Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Nice Linear eMerge E3-Series. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-03-25, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-04-15 ; treat that as the outer limit, not the target.
- EPSS 97.1% , percentile 99.9: FIRST’s model estimates a 97.1% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

Linear eMerge E3-Series devices allow Command Injections.

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2024-03-25; federal due date 2024-04-15. Known ransomware use: Unknown.
- CISA required action: Contact the vendor for guidance on remediating firmware, per their advisory.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 97.08% probability of exploitation activity in the next 30 days; percentile 99.9.

## Sources

- [Listed in CISA KEV notes (linear-solutions.com)](https://linear-solutions.com/wp-content/uploads/E3-Bulletin-06-27-2023.pdf)
- [CVE.org record CVE-2019-7256](https://www.cve.org/CVERecord?id=CVE-2019-7256)
- [NVD entry CVE-2019-7256](https://nvd.nist.gov/vuln/detail/CVE-2019-7256)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-7256)
- [Listed in CISA KEV notes (cisa.gov)](https://www.cisa.gov/news-events/ics-advisories/icsa-24-065-01)
- [applied-risk.com](https://applied-risk.com/labs/advisories)
- [applied-risk.com](https://www.applied-risk.com/resources/ar-2019-005)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/155255/Linear-eMerge-E3-1.00-06-card_scan.php-Command-Injection.html)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/155256/Linear-eMerge-E3-1.00-06-card_scan_decoder.php-Command-Injection.html)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/155272/Linear-eMerge-E3-Access-Controller-Command-Injection.html)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/170372/Linear-eMerge-E3-Series-Access-Controller-Command-Injection.html)

---
Source page: https://erroneo.us/security/cve/CVE-2019-7256/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt