CVE-2026-86087

Authenticated arbitrary file write via crafted request

Published Sep 10, 2026 · Updated Sep 10, 2026

Arbitrary file write in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 allows attackers to write system files. Public source material identifies only a specially crafted request; IBM has not disclosed the receiving component or the faulty operation that permits the filesystem write. Database authentication is required, and successful exploitation can create or overwrite files accessible to the Db2 process.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file write in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 allows attackers to write system files. Public source material identifies only a specially crafted request; IBM has not disclosed the receiving component or the faulty operation that permits the filesystem write. Database authentication is required, and successful exploitation can create or overwrite files accessible to the Db2 process.

The record

CVE
CVE-2026-86087
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
IBM
Product
Db2
Classifications
T1565.001
Attack vector
Unavailable
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record 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=11.5.0 <=11.5.9
  2. Affected versionversion=12.1.0 <=12.1.5

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesauthenticated

What is affected?

IBM · Db2version=11.5.0 <=11.5.9; version=12.1.0 <=12.1.5

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1565.001Stored Data Manipulation

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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