CVE-2020-4666Network attack vector

Credential disclosure via embedded Web UI JavaScript

Published Jan 8, 2021 · Updated Sep 16, 2024

Cross-site scripting in IBM Engineering Requirements Quality Assistant On-Premises allows remote authenticated users to disclose credentials. The Web UI renders user-supplied embedded JavaScript in a trusted session; IBM has not disclosed the affected field or handler. Exploitation requires authenticated access and user interaction, and it can read credentials or alter content within the victim's browser session.

CVSS severity5.4
Medium
EPSS probability0.55%
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 IBM Engineering Requirements Quality Assistant On-Premises allows remote authenticated users to disclose credentials. The Web UI renders user-supplied embedded JavaScript in a trusted session; IBM has not disclosed the affected field or handler. Exploitation requires authenticated access and user interaction, and it can read credentials or alter content within the victim's browser session.

The record

CVE
CVE-2020-4666
Published
Jan 8, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Engineering Requirements Quality Assistant
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=On-Premises

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Engineering Requirements Quality Assistantversion=On-Premises

Published CVSS scores

5.4IBM CorporationCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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