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CVE Record

CVE-2021-39035: IBM Sterling B2B Integrator Standard Edition 6.0.0.0 through 6.0.3.5, 6.1.0.0 through 6.1.0.4, and 6.1.1.0...

IBM Sterling B2B Integrator Standard Edition 6.0.0.0 through 6.0.3.5, 6.1.0.0 through 6.1.0.4, and 6.1.1.0 through 6.1.1.1 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: 213965.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-39035 is a cross-site scripting issue in IBM Sterling B2B Integrator Standard Edition. A logged-in user could place JavaScript into the Web UI, changing page behavior and potentially exposing credentials inside a trusted session.

Executive priority

Treat as a moderate-priority remediation item. It is not listed as known exploited, but it affects a sensitive B2B integration platform where credential exposure inside trusted sessions could have operational impact.

Technical view

Affected versions are 6.0.0.0 through 6.0.3.5, 6.1.0.0 through 6.1.0.4, and 6.1.1.0 through 6.1.1.1. CVSS 3.0 score is 5.4, with network access, low privileges, and user interaction required.

Likely exposure

Exposure is most likely where IBM Sterling B2B Integrator Standard Edition Web UI is reachable by authenticated users on affected versions. Business risk rises if privileged users routinely access shared workflows or untrusted user-generated UI content.

Exploitation context

The provided sources do not show active exploitation, and KEV is false. The CVSS vector indicates exploit maturity as high, but this is not the same as confirmed exploitation.

Researcher notes

Evidence supports authenticated stored or reflected Web UI JavaScript risk, but the bundle does not provide exploit mechanics, affected endpoints, or exact fixed versions. Avoid assuming internet-wide exposure; validate product version, UI reachability, and role permissions.

Mitigation direction

  • Inventory IBM Sterling B2B Integrator Standard Edition versions across production, staging, and disaster recovery.
  • Prioritize remediation for systems in the listed affected version ranges.
  • Follow IBM advisory guidance for the applicable official fix or upgrade path.
  • Restrict Web UI access to trusted networks and necessary authenticated users.
  • Review user permissions that can create or edit Web UI content.

Validation and detection

  • Confirm whether any deployment matches the affected version ranges.
  • Check that IBM’s referenced remediation has been applied where applicable.
  • Review Web UI access paths for unnecessary internet or broad internal exposure.
  • Inspect logs for unusual authenticated Web UI changes around the disclosure period.
  • Confirm privileged users are not relying on affected, unremediated interfaces.
Prepared
Confidence
medium
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.

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CVE-2021-39035 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/C:L/AV:N/S:C/PR:L/I:L/A:N/UI:R/AC:L/E:H/RL:O/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
5.4CVSS 3.0MediumCVSS:3.0/C:L/AV:N/S:C/PR:L/I:L/A:N/UI:R/AC:L/E:H/RL:O/RC:C2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.4Medium
CVSS 3.0 vector shape for CVE-2021-39035Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/C:L/AV:N/S:C/PR:L/I:L/A:N/UI:R/AC:L/E:H/RL:O/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
IBMSterling B2B Integrator6.0.0.0, 6.1.0.0, 6.1.1.0, 6.0.3.5, 6.1.0.4, 6.1.1.1Listed
Weakness

CWE details

No CWE listed

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