CVE-2021-20432Network attack vector

Unauthenticated privileged actions via unrestricted CORS

Published Apr 26, 2021 · Updated Sep 16, 2024

CORS misconfiguration in IBM Spectrum Protect Plus 10.1.0 through 10.1.7 allows remote attackers to retrieve sensitive information. The web interface accepts arbitrary Origin domain names instead of restricting CORS responses to trusted domains, enabling cross-origin privileged requests and data reads. Unauthenticated network access is sufficient; successful requests can perform privileged actions and disclose sensitive data, without reported availability impact.

CVSS severity6.5
Medium
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CORS misconfiguration in IBM Spectrum Protect Plus 10.1.0 through 10.1.7 allows remote attackers to retrieve sensitive information. The web interface accepts arbitrary Origin domain names instead of restricting CORS responses to trusted domains, enabling cross-origin privileged requests and data reads. Unauthenticated network access is sufficient; successful requests can perform privileged actions and disclose sensitive data, without reported availability impact.

The record

CVE
CVE-2021-20432
Published
Apr 26, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Spectrum Protect Plus
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 26, 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=10.1.0
  2. Affected versionversion=10.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Spectrum Protect Plusversion=10.1.0; version=10.1.7

Published CVSS scores

6.4NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
6.5IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
5.7IBMCVSS:3.0/AV:N/UI:N/I:L/S:U/A:N/C:L/PR:N/AC:L/RC:C/RL:O/E:U

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

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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