CVE-2021-29827

Click hijacking via unrestricted cross-frame rendering

Published Dec 18, 2024 · Updated Dec 19, 2024

Clickjacking in IBM InfoSphere Information Server 11.7 allows remote attackers to hijack victim clicks through a malicious website. IBM identifies cross-frame scripting but does not disclose the affected web endpoint or the missing frame-embedding restriction. Exploitation requires a victim to visit an attacker-controlled site and interact with framed content, enabling unintended actions in the product interface.

CVSS severity5.2
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Clickjacking in IBM InfoSphere Information Server 11.7 allows remote attackers to hijack victim clicks through a malicious website. IBM identifies cross-frame scripting but does not disclose the affected web endpoint or the missing frame-embedding restriction. Exploitation requires a victim to visit an attacker-controlled site and interact with framed content, enabling unintended actions in the product interface.

The record

CVE
CVE-2021-29827
Published
Dec 18, 2024
Updated
Dec 19, 2024
Vendor
IBM
Product
InfoSphere Information Server
Classifications
CWE-1021, T1204.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 19, 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=11.7

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

IBM · InfoSphere Information Serverversion=11.7

Published CVSS scores

5.2IBM CorporationCVSS:3.0/AV:A/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1021Improper Restriction of Rendered UI Layers or Frames
T1204.001Malicious 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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