CVE-2021-38887Network attack vector

Authenticated information disclosure through application responses

Published Nov 10, 2021 · Updated Sep 17, 2024

Information disclosure in IBM InfoSphere Information Server 11.7 allows remote authenticated users to read sensitive application responses. IBM has not published the affected endpoint, response field, or operation that exposes the data. A valid application account is required, and the disclosed data can support further attacks without directly changing data or interrupting service.

CVSS severity4.3
Medium
EPSS probability0.80%
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 remote authenticated users to read sensitive application responses. IBM has not published the affected endpoint, response field, or operation that exposes the data. A valid application account is required, and the disclosed data can support further attacks without directly changing data or interrupting service.

The record

CVE
CVE-2021-38887
Published
Nov 10, 2021
Updated
Sep 17, 2024
Vendor
IBM
Product
InfoSphere Information Server
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 10, 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 vectornetwork
Required privilegesauthenticated

What is affected?

IBM · InfoSphere Information Serverversion=11.7

Published CVSS scores

3.8IBMCVSS:3.0/AC:L/I:N/AV:N/S:U/PR:L/UI:N/A:N/C:L/RL:O/E:U/RC:C
4.3IBMCVSS:3.0/AV:N/AC:L/PR:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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