CVE-2026-78802

Deferred Deferred - Pending Action

Remote Code Execution in SKYWORTH SK-WR6640X Router

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: MITRE

Description

An issue in SKYWORTH DIGITAL CO.,LTD SK-WR6640X Wi-Fi 6 Dual-Band Fiber Router (AX1800M) V1.0.3 allows a remote attacker to execute arbitrary code.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-13

EPSS Evaluated

2026-10-18

NVD

CVE-2026-78802

EUVD

EUVD-2026-98887

Affected Vendors & Products

Vendor	Product	Version / Range
n/a	n/a	n/a

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

This vulnerability is an unauthorized remote code execution flaw in the SKYWORTH SK-WR6640X Wi-Fi 6 Dual-Band Fiber Router (AX1800M) version V1.0.3. It allows a remote attacker within the same network to execute arbitrary code on the device due to exposed hidden web endpoints that lack proper access controls.

Detection Guidance

Check for unauthorized access to hidden web endpoints on the router. Scan for open ports 80 or 443 and inspect web interface responses for unusual endpoints. Use network monitoring tools like Wireshark to capture traffic to/from the router's IP.

Impact Analysis

An attacker could exploit this to access sensitive device information, disclose credentials, activate remote management services, and gain root-level access to the router. This could lead to network compromise, data theft, or unauthorized control of connected devices.

Compliance Impact

This vulnerability allows remote attackers to execute arbitrary code on the router, potentially exposing sensitive data such as credentials and device information. Such unauthorized access could lead to violations of data protection regulations like GDPR or HIPAA, depending on the data processed by the router. Unauthorized remote code execution may compromise confidentiality, integrity, and availability of data, increasing non-compliance risks.

Mitigation Strategies

Disable remote management features in the router settings. Update the router firmware to the latest version if an official patch is available. Isolate the router from untrusted networks and change default credentials to strong passwords.

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