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CVE-2019-7256 (GCVE-0-2019-7256)

Vulnerability from cvelistv5 – Published: 2019-07-02 00:00 – Updated: 2025-10-21 23:45
VLAI CISA Shadowserver Previdian
Summary
Linear eMerge E3-Series devices allow Command Injections.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-27 04:00 UTC
CWE
  • n/a
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
Vendor Product Version CPE status
nortekcontrol linear_emerge_essential_firmware Affected: 1.00-06
    cpe:2.3:o:nortekcontrol:linear_emerge_essential_firmware:1.00-06:*:*:*:*:*:*:*
Create a notification for this product.
nortekcontrol linear_emerge_elite_firmware Affected: 1.00-06
    cpe:2.3:o:nortekcontrol:linear_emerge_elite_firmware:1.00-06:*:*:*:*:*:*:*
Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: d8f5f4b5-9ef6-45b9-a2cf-4238019d0526

Vulnerability ID: CVE-2019-7256

Status: Confirmed

Status Updated: 2024-03-25 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2024-03-25
Asserted: 2024-03-25
Scope
Notes: KEV entry: Nice Linear eMerge E3-Series OS Command Injection Vulnerability | Affected: Nice / Linear eMerge E3-Series | Description: Nice Linear eMerge E3-Series contains an OS command injection vulnerability that allows an attacker to conduct remote code execution. | Required action: Contact the vendor for guidance on remediating firmware, per their advisory. | Due date: 2024-04-15 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://linear-solutions.com/wp-content/uploads/E3-Bulletin-06-27-2023.pdf, https://www.cisa.gov/news-events/ics-advisories/icsa-24-065-01; https://nvd.nist.gov/vuln/detail/CVE-2019-7256
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-78
Feed CISA Known Exploited Vulnerabilities Catalog
Product Linear eMerge E3-Series
Due Date 2024-04-15
Date Added 2024-03-25
Vendorproject Nice
Vulnerabilityname Nice Linear eMerge E3-Series OS Command Injection Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 13:24 UTC | Updated: 2026-02-06 07:53 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1e02f07f-e9d9-411e-aae8-61eb18a7c09d

Vulnerability ID: CVE-2019-7256

Status: Confirmed

Status Updated: 2026-09-07 00:00 UTC

Exploited: Yes

Characteristics
Severity: 100.0
Timestamps
First Seen: 2023-10-14
Asserted: 2023-10-14
Last Seen: 2026-09-07
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Linear / eMerge E3-Series | Class: other-software | Severity: Critical (CVSS 10) | IoT: yes | In CISA KEV: yes | Honeypot connections on 2026-09-07: 5
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class other-software
7D Avg 4
Vendor Linear
30D Avg 2
90D Avg 3
Product eMerge E3-Series
Cisa Kev yes
Connections 5
Observation Date 2026-09-07
Vulnerability Class CVSS
Vulnerability Score 10
Vulnerability Severity Critical
References
Created: 2026-07-01 05:54 UTC | Updated: 2026-09-09 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b61ad739-0f5e-4622-8461-bd301f1c6046

Vulnerability ID: CVE-2019-7256

Status: Confirmed

Status Updated: 2024-03-25 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2024-03-25
Asserted: 2024-03-25
Scope
Notes: KEVIntel entry: Linear eMerge E3-Series devices allow Command Injections. | Affected: Linear / eMerge E3-Series | CVSS: 9.8 (CRITICAL) | EPSS: 0.97136 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Linear eMerge E3-Series devices allow Command Injections.
Vendor Linear
Product eMerge E3-Series
Added Date 2024-03-25T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.97136
Cvss Severity CRITICAL
Epss Percentile 0.99886
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 11:14 UTC | Updated: 2026-06-23 11:14 UTC
Show details on NVD website
To clipboard 

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                  "x_transferred"
                ],
                "url": "http://packetstormsecurity.com/files/170372/Linear-eMerge-E3-Series-Access-Controller-Command-Injection.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "affected": [
              {
                "cpes": [
                  "cpe:2.3:o:nortekcontrol:linear_emerge_essential_firmware:1.00-06:*:*:*:*:*:*:*"
                ],
                "defaultStatus": "unknown",
                "product": "linear_emerge_essential_firmware",
                "vendor": "nortekcontrol",
                "versions": [
                  {
                    "status": "affected",
                    "version": "1.00-06"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:o:nortekcontrol:linear_emerge_elite_firmware:1.00-06:*:*:*:*:*:*:*"
                ],
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                "vendor": "nortekcontrol",
                "versions": [
                  {
                    "status": "affected",
                    "version": "1.00-06"
                  }
                ]
              }
            ],
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "HIGH",
                  "baseScore": 9.8,
                  "baseSeverity": "CRITICAL",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2019-7256",
                    "options": [
                      {
                        "Exploitation": "active"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-03-27T04:00:11.102367Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              },
              {
                "other": {
                  "content": {
                    "dateAdded": "2024-03-25",
                    "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-7256"
                  },
                  "type": "kev"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-78",
                    "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-05-01T17:06:56.045Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "government-resource"
                ],
                "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-7256"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2024-03-25T00:00:00.000Z",
                "value": "CVE-2019-7256 added to CISA KEV"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "n/a",
              "vendor": "n/a",
              "versions": [
                {
                  "status": "affected",
                  "version": "n/a"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Linear eMerge E3-Series devices allow Command Injections."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "n/a",
                  "lang": "en",
                  "type": "text"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-01-05T00:00:00.000Z",
            "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
            "shortName": "mitre"
          },
          "references": [
            {
              "url": "https://applied-risk.com/labs/advisories"
            },
            {
              "url": "https://www.applied-risk.com/resources/ar-2019-005"
            },
            {
              "url": "http://packetstormsecurity.com/files/155255/Linear-eMerge-E3-1.00-06-card_scan.php-Command-Injection.html"
            },
            {
              "url": "http://packetstormsecurity.com/files/155256/Linear-eMerge-E3-1.00-06-card_scan_decoder.php-Command-Injection.html"
            },
            {
              "url": "http://packetstormsecurity.com/files/155272/Linear-eMerge-E3-Access-Controller-Command-Injection.html"
            },
            {
              "url": "http://packetstormsecurity.com/files/170372/Linear-eMerge-E3-Series-Access-Controller-Command-Injection.html"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "cveId": "CVE-2019-7256",
        "datePublished": "2019-07-02T00:00:00.000Z",
        "dateReserved": "2019-01-31T00:00:00.000Z",
        "dateUpdated": "2025-10-21T23:45:34.488Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.