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CVE Record

CVE-2021-38961: IBM OPENBMC OP910 is vulnerable to cross-site scripting.

IBM OPENBMC OP910 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 212049.

MediumCVSS 6.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM OpenBMC OP910 has a web interface cross-site scripting flaw. A victim using the trusted Web UI could be exposed to attacker-supplied JavaScript, potentially changing page behavior and disclosing credentials. This is not described as a full system takeover, but it affects a sensitive management interface.

Executive priority

Treat this as a moderate-priority management-plane issue. Prioritize systems where BMC interfaces are reachable beyond restricted admin networks or where shared administrator credentials are used. Remediation should follow IBM guidance.

Technical view

CVE-2021-38961 is an XSS issue in IBM OpenBMC OP910. The CVSS 3.0 score is 6.1: network reachable, low complexity, no privileges required, user interaction required, changed scope, and low confidentiality and integrity impact. The source bundle does not list a CWE or fixed version.

Likely exposure

Exposure is likely limited to organizations running IBM OpenBMC OP910 with the Web UI reachable by administrators or operators. Internet-facing or broadly reachable BMC management interfaces increase practical risk. Evidence provided does not identify other affected versions or products.

Exploitation context

The bundle does not show CISA KEV listing or cite active exploitation. The CVSS temporal vector includes high exploit maturity, but no exploit details are provided. Successful abuse requires user interaction in the Web UI context.

Researcher notes

The provided record establishes XSS behavior and CVSS details but does not include vulnerable parameters, CWE mapping, proof-of-concept detail, or fixed build information. Avoid assuming broader OpenBMC impact beyond IBM OP910 unless vendor sources confirm it.

Mitigation direction

  • Check IBM advisory 6536720 for official remediation or fixed OP910 guidance.
  • Restrict OpenBMC Web UI access to trusted management networks only.
  • Review BMC administrator credential exposure risk and rotate credentials if compromise is suspected.
  • Apply least-privilege access and strong authentication for BMC users.
  • Monitor vendor guidance for updated affected-version or fix details.

Validation and detection

  • Inventory systems running IBM OpenBMC OP910.
  • Confirm whether the OpenBMC Web UI is reachable from untrusted networks.
  • Review IBM X-Force ID 212049 and IBM advisory 6536720 for remediation status.
  • Use approved vulnerability scanning or vendor checks to confirm exposure.
  • Review BMC web access logs for unusual administrator-session activity.
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-2021-38961 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.1 (3.0)
Known Exploited
No
Published

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

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
6.1CVSS 3.0MediumCVSS:3.0/AC:L/A:N/AV:N/I:L/C:L/UI:R/PR:N/S:C/RC:C/RL:O/E:H2.82.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

6.1Medium
CVSS 3.0 vector shape for CVE-2021-38961Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
IBMOPENBMCOP910Listed
Weakness

CWE details

No CWE listed

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