CVE-2021-37912Network attack vector

Unauthenticated command execution via unfiltered Ethernet number

Published Sep 15, 2021 · Updated Sep 17, 2024

OS command injection in HGiga OAKlouds Portal OAKSv2 and OAKSv3 allows remote attackers to execute arbitrary system commands. The network-interface-card settings page accepts shell metacharacters in the Ethernet number parameter without filtering them before command execution. No login or user interaction is required, so a network-reachable portal exposes the host to arbitrary command execution.

CVSS severity9.8
Critical
EPSS probability2.83%
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 HGiga OAKlouds Portal OAKSv2 and OAKSv3 allows remote attackers to execute arbitrary system commands. The network-interface-card settings page accepts shell metacharacters in the Ethernet number parameter without filtering them before command execution. No login or user interaction is required, so a network-reachable portal exposes the host to arbitrary command execution.

The record

CVE
CVE-2021-37912
Published
Sep 15, 2021
Updated
Sep 17, 2024
Vendor
HGiga
Product
OAKlouds Portal
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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?

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

  1. Affected versionversion=OAKlouds-network 2.0 <=OAKlouds-network-2.0-2
  2. Affected versionversion=OAKlouds-network 3.0 <=OAKlouds-network-3.0-2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HGiga · OAKlouds Portalversion=OAKlouds-network 2.0 <=OAKlouds-network-2.0-2; version=OAKlouds-network 3.0 <=OAKlouds-network-3.0-2

Published CVSS scores

10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8TWCERT/CCCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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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