CVE-2026-13476Network attack vector

Unauthenticated service-account command execution

Published Aug 12, 2026 · Updated Aug 12, 2026

OS command injection in IBM Informix Dynamic Server 12.10, 14.10, and 15.0 allows remote attackers to execute service-account commands. The Wire Listener improperly validates user-supplied input before passing it into an undisclosed operating-system command path. No authentication or user interaction is required, and IBM has not disclosed the affected input field or handler; successful execution is limited to service-account privileges.

CVSS severity7.3
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in IBM Informix Dynamic Server 12.10, 14.10, and 15.0 allows remote attackers to execute service-account commands. The Wire Listener improperly validates user-supplied input before passing it into an undisclosed operating-system command path. No authentication or user interaction is required, and IBM has not disclosed the affected input field or handler; successful execution is limited to service-account privileges.

The record

CVE
CVE-2026-13476
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
IBM
Product
IBM Informix Dynamic Server
Classifications
CWE-78, CAPEC-88, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 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=12.10
  2. Affected versionversion=14.10
  3. Affected versionversion=15.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Informix Dynamic Serverversion=12.10; version=14.10; version=15.0

Published CVSS scores

7.3IBMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS Command Injection
T1059Command and Scripting Interpreter

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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