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CVE Record

CVE-2021-39063: IBM Spectrum Protect Plus 10.1.0.0 through 10.1.8.x uses Cross-Origin Resource Sharing (CORS) which could a...

IBM Spectrum Protect Plus 10.1.0.0 through 10.1.8.x uses Cross-Origin Resource Sharing (CORS) which could allow an attacker to carry out privileged actions and retrieve sensitive information due to a misconfiguration in access control headers. IBM X-Force ID: 214956.

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Spectrum Protect Plus had a CORS access-control header misconfiguration in versions 10.1.0.0 through 10.1.8.x. A network attacker could use it to perform privileged actions or retrieve sensitive information. The issue is medium severity, but it affects backup infrastructure, so exposed deployments deserve timely attention.

Executive priority

Prioritize remediation in normal vulnerability cycles, faster for internet-reachable or broadly accessible backup management systems. Backup platforms are sensitive business infrastructure, and this issue can affect privileged actions and data confidentiality.

Technical view

CVE-2021-39063 is a CORS misconfiguration in IBM Spectrum Protect Plus 10.1.0.0 through 10.1.8.x. The published CVSS v3.0 score is 6.5 with network attack vector, low complexity, no privileges required, and low confidentiality and integrity impact. IBM X-Force tracks it as 214956.

Likely exposure

Exposure is limited to IBM Spectrum Protect Plus deployments in the affected 10.1.0.0 through 10.1.8.x range. Risk is higher where the management interface or related web endpoints are reachable from untrusted networks.

Exploitation context

The provided sources do not show CISA KEV listing or confirmed active exploitation. The CVSS vector marks exploit maturity as unproven. Treat this as a credible exposure issue, not as a confirmed in-the-wild incident from the supplied evidence.

Researcher notes

The source bundle does not provide CWE mapping, endpoint details, or exploit mechanics. Avoid assuming affected routes beyond IBM’s CORS description. Validation should focus on product version, interface exposure, and whether IBM’s advisory remediation is present.

Mitigation direction

  • Inventory IBM Spectrum Protect Plus versions across backup environments.
  • Review IBM advisory 6525346 for the official remediation path.
  • Apply IBM-supported updates or fixes for affected 10.1.x deployments.
  • Restrict access to Spectrum Protect Plus web management interfaces.
  • Monitor logs for unusual privileged actions or sensitive data access.

Validation and detection

  • Confirm whether any deployment runs versions 10.1.0.0 through 10.1.8.x.
  • Verify the IBM advisory remediation has been applied.
  • Review network exposure of Spectrum Protect Plus web endpoints.
  • Check change logs for unexpected administrative actions.
  • Document compensating controls if immediate updating is delayed.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-39063 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/UI:N/C:L/I:L/A:N/S:U/PR:N/AC:L/RL:O/E:U/RC:C

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.5CVSS 3.0MediumCVSS:3.0/AV:N/UI:N/C:L/I:L/A:N/S:U/PR:N/AC:L/RL:O/E:U/RC:C3.92.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

6.5Medium
CVSS 3.0 vector shape for CVE-2021-39063Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/UI:N/C:L/I:L/A:N/S:U/PR:N/AC:L/RL:O/E:U/RC:C

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
IBMSpectrum Protect Plus10.1.0.0, 10.1.8.0Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.