CVE-2021-29867Network attack vector

Authenticated unauthorized notebook viewing and editing

Published Dec 3, 2021 · Updated Sep 16, 2024

Improper authorization in IBM Cognos Analytics 11.1.7 and 11.2.0 allows remote authenticated users to view or edit others' Jupyter notebooks. IBM has not published the affected request handler or the authorization check that fails when notebook access is requested. Exploitation requires a valid Cognos account with Notebook capability and an installed, configured Jupyter Notebook Server; exposure is limited to notebook confidentiality and integrity.

CVSS severity5.4
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in IBM Cognos Analytics 11.1.7 and 11.2.0 allows remote authenticated users to view or edit others' Jupyter notebooks. IBM has not published the affected request handler or the authorization check that fails when notebook access is requested. Exploitation requires a valid Cognos account with Notebook capability and an installed, configured Jupyter Notebook Server; exposure is limited to notebook confidentiality and integrity.

The record

CVE
CVE-2021-29867
Published
Dec 3, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
Cognos Analytics
Classifications
T1213, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 3, 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=11.1.7
  2. Affected versionversion=11.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · Cognos Analyticsversion=11.1.7; version=11.2.0

Published CVSS scores

5.4IBMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1213Data from Information Repositories
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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