CVE-2021-32930Network attack vector

Unauthenticated code execution via runProViewUpgrade action

Published Jun 11, 2021 · Updated Aug 3, 2024

Missing authentication in Advantech iView before 5.7.03.6182 allows remote attackers to execute arbitrary code via NetworkServlet. The runProViewUpgrade action on default TCP port 8080 accepts requests without checking authentication before exposing upgrade functionality. Network access to the servlet is sufficient to run code in the service account context and change application configuration.

CVSS severity9.8
Critical
EPSS probability8.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Advantech iView before 5.7.03.6182 allows remote attackers to execute arbitrary code via NetworkServlet. The runProViewUpgrade action on default TCP port 8080 accepts requests without checking authentication before exposing upgrade functionality. Network access to the servlet is sufficient to run code in the service account context and change application configuration.

The record

CVE
CVE-2021-32930
Published
Jun 11, 2021
Updated
Aug 3, 2024
Vendor
Advantech
Product
iView
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 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?

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

  1. Affected versionversion=versions prior to v5.7.03.6182

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Advantech · iViewversion=versions prior to v5.7.03.6182

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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