CVE-2021-33010Network attack vector

Service interruption via uncaught AutoBuild exception

Published Apr 4, 2022 · Updated Apr 16, 2025

Uncaught exception in AVEVA System Platform 2017 through 2020 R2 P01 allows remote attackers to interrupt the AutoBuild service. An undisclosed AutoBuild function throws an exception while processing crafted network input, and the service fails to catch it. No authentication or user interaction is required; availability is exposed only where the AutoBuild service remains enabled.

CVSS severity7.5
High
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncaught exception in AVEVA System Platform 2017 through 2020 R2 P01 allows remote attackers to interrupt the AutoBuild service. An undisclosed AutoBuild function throws an exception while processing crafted network input, and the service fails to catch it. No authentication or user interaction is required; availability is exposed only where the AutoBuild service remains enabled.

The record

CVE
CVE-2021-33010
Published
Apr 4, 2022
Updated
Apr 16, 2025
Vendor
AVEVA
Product
AVEVA System Platform
Classifications
CWE-248, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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=2017 <=2020 R2 P01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AVEVA · AVEVA System Platformversion=2017 <=2020 R2 P01

Published CVSS scores

5.0NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
6.5AVEVACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-248Uncaught Exception
T1499Endpoint Denial of Service

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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