CVE-2023-28020Network attack vector

User redirection via unvalidated login destination

Published Jul 18, 2023 · Updated Oct 21, 2024

Open redirection in HCL BigFix WebUI allows remote attackers to send users to an external site through a crafted login request. The login page places an attacker-controlled redirect URL into the HTTP redirect response header without restricting its destination. Exploitation requires a user to follow the crafted link, and the grounded impact is redirection with limited confidentiality exposure rather than data modification or service interruption.

CVSS severity4.7
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirection in HCL BigFix WebUI allows remote attackers to send users to an external site through a crafted login request. The login page places an attacker-controlled redirect URL into the HTTP redirect response header without restricting its destination. Exploitation requires a user to follow the crafted link, and the grounded impact is redirection with limited confidentiality exposure rather than data modification or service interruption.

The record

CVE
CVE-2023-28020
Published
Jul 18, 2023
Updated
Oct 21, 2024
Vendor
HCL Software
Product
HCL BigFix WebUI
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 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=All

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HCL Software · HCL BigFix WebUIversion=All

Published CVSS scores

4.7HCL SoftwareCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001User Execution: Malicious Link

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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