CVE-2025-1329

Local code execution via mishandled DNS responses

Published May 8, 2025 · Updated Feb 26, 2026

Out-of-bounds write in IBM CICS TX Standard 11.1 and Advanced 10.1 and 11.1 allows local users to execute arbitrary code. The gethostbyaddr function fails to safely handle DNS return data, allowing the response to write outside its intended memory buffer. A low-privileged local account can reach the faulty lookup path without user interaction, and successful corruption executes code in the affected process.

CVSS severity7.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in IBM CICS TX Standard 11.1 and Advanced 10.1 and 11.1 allows local users to execute arbitrary code. The gethostbyaddr function fails to safely handle DNS return data, allowing the response to write outside its intended memory buffer. A low-privileged local account can reach the faulty lookup path without user interaction, and successful corruption executes code in the affected process.

The record

CVE
CVE-2025-1329
Published
May 8, 2025
Updated
Feb 26, 2026
Vendor
IBM
Product
CICS TX Standard
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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=11.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

IBM · CICS TX Standardversion=11.1
IBM · CICS TX Advancedversion=10.1; version=11.1

Published CVSS scores

7.8IBMCVSS:3.1/AV:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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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