CVE-2021-38947Network attack vector

Sensitive information decryption via weak cryptography

Published Dec 13, 2021 · Updated Sep 16, 2024

Inadequate encryption strength in IBM Spectrum Copy Data Management 2.2.13 and earlier allows remote attackers to decrypt sensitive information. IBM has not disclosed the affected cryptographic primitive, protocol, data path, or operation that applies insufficient protection. Exploitation requires network access and a high-complexity cryptanalytic attack; the reported consequence is confidentiality loss only.

CVSS severity5.9
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inadequate encryption strength in IBM Spectrum Copy Data Management 2.2.13 and earlier allows remote attackers to decrypt sensitive information. IBM has not disclosed the affected cryptographic primitive, protocol, data path, or operation that applies insufficient protection. Exploitation requires network access and a high-complexity cryptanalytic attack; the reported consequence is confidentiality loss only.

The record

CVE
CVE-2021-38947
Published
Dec 13, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Storage Defender Copy Data Management
Classifications
CWE-326
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=2.2.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Storage Defender Copy Data Managementversion=2.2.13

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
5.9IBM CorporationCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength

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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