CVE-2023-27540Network attack vector

Remote service interruption via unbounded resource allocation

Published Jul 10, 2023 · Updated Oct 25, 2024

Resource-allocation flaw in IBM Watson CP4D Data Stores 4.6.0 allows remote attackers to interrupt the service via crafted requests. IBM has not identified the affected endpoint or resource, nor disclosed how attacker-controlled input triggers allocation without limits or throttling. Exploitation requires system-specific information and no authentication or user interaction, and the documented consequence is service interruption.

CVSS severity5.9
Medium
EPSS probability1.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource-allocation flaw in IBM Watson CP4D Data Stores 4.6.0 allows remote attackers to interrupt the service via crafted requests. IBM has not identified the affected endpoint or resource, nor disclosed how attacker-controlled input triggers allocation without limits or throttling. Exploitation requires system-specific information and no authentication or user interaction, and the documented consequence is service interruption.

The record

CVE
CVE-2023-27540
Published
Jul 10, 2023
Updated
Oct 25, 2024
Vendor
IBM
Product
IBM Watson CP4D Data Stores
Classifications
CWE-770, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 25, 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=4.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Watson CP4D Data Storesversion=4.6.0

Published CVSS scores

5.9IBMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

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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