CVE-2020-11639

Controller manipulation via weak IPC object access

Published Jul 23, 2024 · Updated Aug 4, 2024

Improper IPC access control in ABB Advant MOD 300 AdvaBuild 3.0 through 3.7 SP2 allows local users to alter controller data. Weak access controls on objects shared by same-host Windows processes let a crafted application inject arbitrary data into inter-process exchanges. An authenticated account able to run local software is required; injected data permits controller reads and writes or crashes 800xA and AdvaBuild processes.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper IPC access control in ABB Advant MOD 300 AdvaBuild 3.0 through 3.7 SP2 allows local users to alter controller data. Weak access controls on objects shared by same-host Windows processes let a crafted application inject arbitrary data into inter-process exchanges. An authenticated account able to run local software is required; injected data permits controller reads and writes or crashes 800xA and AdvaBuild processes.

The record

CVE
CVE-2020-11639
Published
Jul 23, 2024
Updated
Aug 4, 2024
Vendor
GENEREX SYSTEMS Computervertriebsgesellschaft mbH
Product
Advant MOD 300 AdvaBuild
Classifications
CWE-924, T0836
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=3.0 <=3.7 SP2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

GENEREX SYSTEMS Computervertriebsgesellschaft mbH · Advant MOD 300 AdvaBuildversion=3.0 <=3.7 SP2
GENEREX SYSTEMS Computervertriebsgesellschaft mbH · AdvaBuildversion=3.0 <=3.7_sp2

Published CVSS scores

7.1ABBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C
7.8ABBCVSS:3.1/AV:L/AC:L/PR:L/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-924Improper Enforcement of Message Integrity During Transmission in a Communication Channel
T0836Modify Parameter

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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