---
id: CVE-2025-12767
title: >-
  IBM Concert 1.0.0 through 3.0.0 could allow a remote attacker to cause a
  denial of service using a specially crafted regular expression that would
  cause excessive resource consumption.
summary: >-
  IBM Concert 1.0.0 through 3.0.0 could allow a remote attacker to cause a
  denial of service using a specially crafted regular expression that would
  cause excessive resource consumption.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-770
vendor: IBM
product: Concert
affected:
  - Concert >= 1.0.0 <= 3.0.0
published: '2026-09-22'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:17:07.270'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-12767'
references:
  - url: 'https://www.ibm.com/support/pages/node/7288830'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
epss: 0.00357
epssPercentile: 0.26638
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-23T14:15:10.856480Z'
ingestedAt: '2026-09-22T22:12:45.128Z'
---

## Overview

IBM Concert 1.0.0 through 3.0.0 could allow a remote attacker to cause a denial of service using a specially crafted regular expression that would cause excessive resource consumption.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.