CVE-2023-47150Network attack vector

Remote service interruption via mishandled AES operations

Published Mar 26, 2024 · Updated Feb 4, 2026

Uncontrolled resource consumption in IBM Common Cryptographic Architecture 7.0.0 through 7.5.36 allows remote attackers to interrupt service. The CSNBSAD and CSNBSAE service calls mishandle certain AES operations when their access-control points are enabled. The calls require no authentication or user interaction, but IBM has not disclosed whether the resulting interruption is a hang, crash, or another failure mode.

CVSS severity7.5
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in IBM Common Cryptographic Architecture 7.0.0 through 7.5.36 allows remote attackers to interrupt service. The CSNBSAD and CSNBSAE service calls mishandle certain AES operations when their access-control points are enabled. The calls require no authentication or user interaction, but IBM has not disclosed whether the resulting interruption is a hang, crash, or another failure mode.

The record

CVE
CVE-2023-47150
Published
Mar 26, 2024
Updated
Feb 4, 2026
Vendor
IBM
Product
Common Cryptographic Architecture
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2026Record 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=7.0.0 <=7.5.36

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · Common Cryptographic Architectureversion=7.0.0 <=7.5.36

Published CVSS scores

7.5IBM Security BulletinCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5IBM CNACVSS:3.1/AV:N/AC:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

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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