CVE-2019-3989

CRITICAL

Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due to improperly sanitized input when retrieving internal network configuration data.

Affects 2 products across 1 vendor.

BCS7.49
CVSS 3.19.8
EPSS3.7%
Percentile89th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-78: OS Command Injection

Attacker injects OS commands through application inputs passed to system() or equivalent calls, leading to arbitrary command execution.

Related Attack Patterns (CAPEC)
CAPEC-43 Exploiting Multiple Input Interpretation Layers
via CWE-78
CAPEC-108 Command Line Execution through SQL Injection
via CWE-78
CAPEC-6 Argument Injection
via CWE-78
CAPEC-15 Command Delimiters
via CWE-78
CAPEC-88 OS Command Injection
via CWE-78

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ SAGE Intelligence — CITED Relevance Research Team

This vulnerability was disclosed in 2019. A critical vulnerability affects Amazon systems (CVE-2019-3989). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2019-GLOBAL-139861-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2019-3989?
This vulnerability was disclosed in 2019. A critical vulnerability affects Amazon systems (CVE-2019-3989). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2019-3989?
CVE-2019-3989 has CVSS 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS: 3.7%.
Is CVE-2019-3989 actively exploited?
No confirmed active exploitation of CVE-2019-3989 as of 2026-05-30.
How do I remediate CVE-2019-3989?
Priority: MEDIUM.
What systems are affected by CVE-2019-3989?
CVE-2019-3989 affects: Amazon, Amazon.
Vulnerability Details
CVE IDCVE-2019-3989
BSIDBS-2019-GLOBAL-139861-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published2019-12-11
Last Modified2024-11-21
ICS Relevance15%
Weakness (CWE)
OS Command Injection
Domains
CLOUD
SourceNVD
Official Description

Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due to improperly sanitized input when retrieving internal network configuration data.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due to improperly sanitized input when retrieving internal network configuration data. CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Exploitation Likelihood: LOW

Affected Products
VendorProductFixed Version
Amazon Blink Xt2 Sync Module Firmware —
Amazon Blink Xt2 Sync Module —
Remediation

No patch URL on record. Monitor vendor security advisories directly.

Threat Intelligence
● Threat Intelligence Validated: August 2026 | Threat Age: 2445 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
SAGE Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash5549851a10293e53670b1b6bea32d3e9b92d02d9d4e06da100b4eb4581534f9a7b641b19e7662671b073e8c3d148312b51aaaf8c07ac9f87b45ab48a87e5c88a
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