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CVE Record

CVE-2021-39049: IBM i2 Analyst's Notebook 9.2.0, 9.2.1, and 9.2.2 is vulnerable to a stack-based buffer overflow, caused by...

IBM i2 Analyst's Notebook 9.2.0, 9.2.1, and 9.2.2 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local attacker could overflow a buffer and gain lower level privileges. IBM X-Force ID: 214439.

MediumCVSS 5.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM i2 Analyst's Notebook versions 9.2.0, 9.2.1, and 9.2.2 contain a local stack-based buffer overflow. The reported impact is limited confidentiality, integrity, and availability loss, with possible lower-level privilege gain. This is not described as remotely exploitable in the provided sources.

Executive priority

Treat as a moderate workstation software risk. It should be fixed through normal vulnerability management, with higher urgency where Analyst's Notebook handles sensitive investigations or is used on shared systems.

Technical view

The CVE describes improper bounds checking leading to stack-based buffer overflow in IBM i2 Analyst's Notebook 9.2.0 through 9.2.2. CVSS 3.0 score is 5.3 with local attack vector, low complexity, no privileges required, and user interaction required.

Likely exposure

Exposure is likely limited to endpoints or workstations running IBM i2 Analyst's Notebook 9.2.0, 9.2.1, or 9.2.2. The provided data does not identify server-side, cloud, or public internet exposure.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. CVSS marks exploit maturity as unproven. Exploitation requires local attack context and user interaction, according to the supplied vector.

Researcher notes

Evidence is narrow but consistent: affected versions, vulnerability class, CVSS vector, and IBM X-Force ID are provided. No exploit details, affected file formats, or fixed version are included in the bundle, so remediation should defer to IBM's advisory.

Mitigation direction

  • Identify all IBM i2 Analyst's Notebook installations and versions.
  • Prioritize remediation for versions 9.2.0, 9.2.1, and 9.2.2.
  • Check IBM advisory guidance before applying updates or compensating controls.
  • Limit local access to systems running affected versions where feasible.
  • Avoid opening untrusted Analyst's Notebook content until vendor guidance is applied.

Validation and detection

  • Confirm whether any endpoint runs Analyst's Notebook 9.2.0, 9.2.1, or 9.2.2.
  • Compare installed versions against IBM's advisory and X-Force entry.
  • Verify remediation status through software inventory or endpoint management records.
  • Record whether affected systems require user interaction for risky workflows.
  • Document any compensating access restrictions until vendor remediation is complete.
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-2021-39049 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.3 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AC:L/A:L/PR:N/S:U/C:L/I:L/AV:L/UI:R/E:U/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
5.3CVSS 3.0MediumCVSS:3.0/AC:L/A:L/PR:N/S:U/C:L/I:L/AV:L/UI:R/E:U/RL:O/RC:C1.83.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.3Medium
CVSS 3.0 vector shape for CVE-2021-39049Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AC:L/A:L/PR:N/S:U/C:L/I:L/AV:L/UI:R/E:U/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
IBMi2 Analyst's Notebook9.2.0, 9.2.1, 9.2.2Listed
Weakness

CWE details

No CWE listed

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