CVE-2020-4490Network attack vector

Phishing redirection via reverse tabnabbing

Published May 29, 2020 · Updated Sep 17, 2024

Reverse tabnabbing in IBM BAW 18 and 19 and BPM 8.0, 8.5, and 8.6 allows remote attackers to redirect users to phishing sites. IBM locates the flaw in the Process App Documentation Editor in Process Center and Workflow Center but does not disclose the exact link-handling operation that leaves the opener context exposed. Exploitation requires a user to open the crafted link, after which the new tab can replace the trusted page context with phishing content.

CVSS severity5.3
Medium
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reverse tabnabbing in IBM BAW 18 and 19 and BPM 8.0, 8.5, and 8.6 allows remote attackers to redirect users to phishing sites. IBM locates the flaw in the Process App Documentation Editor in Process Center and Workflow Center but does not disclose the exact link-handling operation that leaves the opener context exposed. Exploitation requires a user to open the crafted link, after which the new tab can replace the trusted page context with phishing content.

The record

CVE
CVE-2020-4490
Published
May 29, 2020
Updated
Sep 17, 2024
Vendor
IBM
Product
Business Automation Workflow
Classifications
T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 29, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=18.0.0.0
  2. Affected versionversion=19.0.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · Business Automation Workflowversion=18.0.0.0; version=19.0.0.0
IBM · IBM Business Process Manager Advancedversion=8.0; version=8.0.1; version=8.0.1.1; version=8.0.1.2; version=8.0.1.3; version=8.5; version=8.5.0.1; version=8.5.0.2; version=8.5.5; version=8.5.6; version=8.5.6.1; version=8.5.6.2; version=8.5.7; version=8.5.7.CF201606; version=8.5.7.CF201609; version=8.5.7.CF201612; version=8.5.7.CF201703; version=8.5.7.CF201706; version=8.6

Published CVSS scores

5.3IBMCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1566.002Spearphishing Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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