CVE-2023-40363Network attack vector

Privilege escalation via writable installation files

Published Nov 18, 2023 · Updated Nov 21, 2024

Incorrect default permissions in IBM InfoSphere Information Server 11.7 allow remote authenticated users to modify installation files. The installation process leaves unspecified product files with permissions that permit low-privilege accounts to overwrite them. Network-reachable authenticated access is required; IBM identifies privilege escalation, but does not disclose the affected filenames or execution path.

CVSS severity8.1
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect default permissions in IBM InfoSphere Information Server 11.7 allow remote authenticated users to modify installation files. The installation process leaves unspecified product files with permissions that permit low-privilege accounts to overwrite them. Network-reachable authenticated access is required; IBM identifies privilege escalation, but does not disclose the affected filenames or execution path.

The record

CVE
CVE-2023-40363
Published
Nov 18, 2023
Updated
Nov 21, 2024
Vendor
IBM
Product
InfoSphere Information Server
Classifications
CWE-276
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 18, 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 privilegesauthenticated

What is affected?

IBM · InfoSphere Information Serverversion=11.7

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
8.1IBM CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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