CVE-2021-29907Network attack vector

Authenticated code execution via executable file upload

Published Aug 31, 2021 · Updated Sep 16, 2024

Arbitrary code execution in IBM OpenPages with Watson 8.1 through 8.2 allows remote authenticated users to execute code via a file upload. IBM identifies the upload path as the locus but has not disclosed which handler accepts the file or how it becomes executable. A valid OpenPages account and network access to the upload interface are required; successful exploitation runs attacker-supplied code on the server.

CVSS severity8.8
High
EPSS probability1.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary code execution in IBM OpenPages with Watson 8.1 through 8.2 allows remote authenticated users to execute code via a file upload. IBM identifies the upload path as the locus but has not disclosed which handler accepts the file or how it becomes executable. A valid OpenPages account and network access to the upload interface are required; successful exploitation runs attacker-supplied code on the server.

The record

CVE
CVE-2021-29907
Published
Aug 31, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
OpenPages
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 31, 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=8.1
  2. Affected versionversion=8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · OpenPagesversion=8.1; version=8.2

Published CVSS scores

8.8IBMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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