CVE-2021-31769Public exploitNetwork attack vector

Remote code execution via Task Scheduler command injection

Published Jun 21, 2021 · Updated Aug 3, 2024

OS command injection in MyQ Server in MyQ X Smart before 8.2 allows remote authenticated users to execute OS commands remotely. The Task Scheduler accepts a server-file selection intended for administrators without authorization, while readable administrative session files provide the needed session data; injected commands can create PHP files and run with server privileges. The attack requires only an unprivileged account and network access, and can compromise confidentiality, integrity, and service availability.

CVSS severity8.8
High
EPSS probability4.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in MyQ Server in MyQ X Smart before 8.2 allows remote authenticated users to execute OS commands remotely. The Task Scheduler accepts a server-file selection intended for administrators without authorization, while readable administrative session files provide the needed session data; injected commands can create PHP files and run with server privileges. The attack requires only an unprivileged account and network access, and can compromise confidentiality, integrity, and service availability.

The record

CVE
CVE-2021-31769
Published
Jun 21, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 21, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0NVDAV:N/AC:L/Au:S/C:C/I:C/A:C

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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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