CVE-2025-66576Public exploitNetwork attack vector

Unauthenticated code execution via WebSocket keystrokes

Published Dec 4, 2025 · Updated Jul 14, 2026

Command injection in Remotecontrolio Remote Keyboard Desktop 1.0.1 allows remote attackers to execute system commands through WebSocket input. The service accepts unauthenticated keyboard_event messages on port 8080, letting an attacker open the Windows Run dialog and type a rundll32 command that loads an attacker-hosted DLL over SMB. Network reachability to the listening WebSocket is sufficient, and successful execution runs the payload in the application's user context.

CVSS severity9.8
Critical
EPSS probability1.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Remotecontrolio Remote Keyboard Desktop 1.0.1 allows remote attackers to execute system commands through WebSocket input. The service accepts unauthenticated keyboard_event messages on port 8080, letting an attacker open the Windows Run dialog and type a rundll32 command that loads an attacker-hosted DLL over SMB. Network reachability to the listening WebSocket is sufficient, and successful execution runs the payload in the application's user context.

The record

CVE
CVE-2025-66576
Published
Dec 4, 2025
Updated
Jul 14, 2026
Vendor
Remotecontrolio
Product
Remote Keyboard Desktop
Classifications
CWE-78, T1218.011
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Remotecontrolio · Remote Keyboard Desktopversion=1.0.1

Published CVSS scores

8.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1218.011System Binary Proxy Execution: Rundll32

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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