Insufficient access control on Inter process communication,

published 2024-07-23 2 y ago modified 2026-06-17 4 mo ago also EUVD-2020-3984

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits: 0; none known

An attacker could exploit the vulnerability by injecting garbage data or specially crafted data. Depending on the data injected each process might be affected differently. The process could crash or cause communication issues on the affected node, effectively causing a denial-of-service attack. The attacker could tamper with the data transmitted, causing the product to store wrong information or act on wrong data or display wrong information.

This issue affects Advant MOD 300 AdvaBuild: from 3.0 through 3.7 SP2.

For an attack to be successful, the attacker must have local access to a node in the system and be able to start a specially crafted application that disrupts the communication. An attacker who successfully exploited the vulnerability would be able to manipulate the data in such way as allowing reads and writes to the controllers or cause Windows processes in 800xA for MOD 300 and AdvaBuild to crash.

Patch / fix

fixed in 1

abb advabuild 3.7

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-07-23)

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

ABB Advant MOD 300 AdvaBuild
abb advabuild

Classification

Weakness

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

References

search.abb.com /library/Download.aspx?DocumentID=3BUA003421&LanguageCode=en&DocumentPartId=&Action=Launch&_ga=2.200044199.882
vendor-advisory

Sources

CVE List CVE-2020-11639
NVD CVE-2020-11639

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary