CVE-2023-43021Network attack vector

Information disclosure via detailed browser error messages

Published Dec 1, 2023 · Updated Nov 21, 2024

Information disclosure in IBM InfoSphere Information Server 11.7 allows remote attackers to obtain sensitive data through browser errors. The browser error-handling path returns detailed technical error content instead of suppressing sensitive implementation information. No authentication or user interaction is required, but the disclosed data is limited to information present in the generated error response.

CVSS severity5.3
Medium
EPSS probability0.71%
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 attackers to obtain sensitive data through browser errors. The browser error-handling path returns detailed technical error content instead of suppressing sensitive implementation information. No authentication or user interaction is required, but the disclosed data is limited to information present in the generated error response.

The record

CVE
CVE-2023-43021
Published
Dec 1, 2023
Updated
Nov 21, 2024
Vendor
IBM
Product
InfoSphere Information Server
Classifications
CWE-209, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 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=11.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · InfoSphere Information Serverversion=11.7

Published CVSS scores

5.3IBM CorporationCVSS:3.1/AV:N/AC:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information
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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