CVE-2021-29681

Sensitive information disclosure via HTML query parameter injection

Published May 21, 2021 · Updated Sep 17, 2024

Information disclosure in IBM InfoSphere Information Server 11.7 allows attackers to obtain sensitive information via injected HTML query parameters. The affected HTML query handling accepts attacker-controlled parameters and returns sensitive information, but IBM does not publish a more specific code locus. Attackers need adjacent-network access; the disclosed impact is read-only sensitive information, with no integrity or availability effect reported.

CVSS severity3.1
Low
EPSS probability0.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in IBM InfoSphere Information Server 11.7 allows attackers to obtain sensitive information via injected HTML query parameters. The affected HTML query handling accepts attacker-controlled parameters and returns sensitive information, but IBM does not publish a more specific code locus. Attackers need adjacent-network access; the disclosed impact is read-only sensitive information, with no integrity or availability effect reported.

The record

CVE
CVE-2021-29681
Published
May 21, 2021
Updated
Sep 17, 2024
Vendor
IBM
Product
InfoSphere Information Server
Classifications
T1190
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 21, 2021CVE 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=11.7

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

IBM · InfoSphere Information Serverversion=11.7

Published CVSS scores

3.1IBMCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/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.

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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

T1190Exploit Public-Facing Application

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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