CVE-2019-7256
RCE in Nortekcontrol Linear Emerge Essential Firmware ≤ 1.00-06
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2019-7256 is a critical-severity OS Command Injection (CWE-78) vulnerability in Nortekcontrol Linear Emerge Essential Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 0.1% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
Linear eMerge E3-Series access control devices are affected by CVE-2019-7256, a command injection vulnerability tracked under CWE-78. The issue permits arbitrary command execution on the underlying system and carries a CVSS 3.1 base score of 9.8 reflecting network-accessible, unauthenticated attack vectors with high impact on confidentiality, integrity, and availability.
An unauthenticated attacker with network reachability can supply crafted input to trigger command injection, resulting in full control over the affected device without requiring user interaction or credentials. Public exploit code targeting firmware versions such as 1.00-06 has been published, confirming that remote code execution is achievable in practice.
Advisory references point to detailed technical write-ups and proof-of-concept material, but no vendor-supplied patches or configuration mitigations are described in the available sources.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2019-16800
Vulnerability Data
Linear eMerge E3-Series devices allow Command Injections.
- CWE(s)
- KEV Date Added
- 25 March 2024
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.2.5V1.2.8V15.2.5
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.
Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.