CVE-2020-8486

Node redundancy disruption via weak IPC access controls

Published Apr 29, 2020 · Updated Aug 4, 2024

Improper access control in ABB System 800xA RNRP before 6.1.1 allows local users to disrupt node redundancy via crafted IPC data. Weak access controls on objects that exchange data between Windows processes let a specially crafted local application inject garbage or crafted values. An authenticated account with local or remote logon and permission to execute that application is required; affected nodes can lose communications or act on false runtime data.

CVSS severity6.6
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper access control in ABB System 800xA RNRP before 6.1.1 allows local users to disrupt node redundancy via crafted IPC data. Weak access controls on objects that exchange data between Windows processes let a specially crafted local application inject garbage or crafted values. An authenticated account with local or remote logon and permission to execute that application is required; affected nodes can lose communications or act on false runtime data.

The record

CVE
CVE-2020-8486
Published
Apr 29, 2020
Updated
Aug 4, 2024
Vendor
ABB
Product
System 800xA RNRP
Classifications
CWE-264, T1565.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 29, 2020CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=all versions

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ABB · System 800xA RNRPversion=all versions

Published CVSS scores

6.1ABBCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H/E:F/RL:O/RC:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.6ABBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P

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-264Permissions, Privileges, and Access Controls
T1565.002Transmitted Data Manipulation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo