CVE-2020-8477Network attack vector

Remote code execution via ABBTracerLib input validation

Published Apr 22, 2020 · Updated Aug 4, 2024

Cross-site scripting in ABB System 800xA Information Manager 5.1, 6.0 through 6.0.3.2, and 6.1 allows remote attackers to execute code. The unintentionally shipped ABBTracerLib auxiliary component accepts malicious input without proper validation when a browser loads it from attacker-controlled content. Exploitation requires luring a user on a host with the component installed to visit a malicious website, after which code runs on the Information Manager server and Display Services or other functions can stop or malfunction.

CVSS severity8.8
High
EPSS probability1.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in ABB System 800xA Information Manager 5.1, 6.0 through 6.0.3.2, and 6.1 allows remote attackers to execute code. The unintentionally shipped ABBTracerLib auxiliary component accepts malicious input without proper validation when a browser loads it from attacker-controlled content. Exploitation requires luring a user on a host with the component installed to visit a malicious website, after which code runs on the Information Manager server and Display Services or other functions can stop or malfunction.

The record

CVE
CVE-2020-8477
Published
Apr 22, 2020
Updated
Aug 4, 2024
Vendor
ABB
Product
800xA Information Manager
Classifications
CWE-79, CWE-489, T1189, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 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

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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=5 <=5.1
  2. Affected versionversion=6.0 <=6.0.3.2
  3. Affected versionversion=6.1 <6.1*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ABB · 800xA Information Managerversion=5 <=5.1; version=6.0 <=6.0.3.2; version=6.1 <6.1*

Published CVSS scores

8.1ABBCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:W/RC:C
8.8ABBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Cross-site Scripting (XSS)
CWE-489Leftover Debug Code
T1189Drive-by Compromise
T1203Exploitation for Client Execution

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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