---
id: CVE-2025-15647
title: >-
  CDT before 1.4.5 contains an out-of-bounds read vulnerability in the
  opposedVertexInd() function when constraint edge intersections are computed in
  floating point and round outside adjacent triangles
summary: >-
  CDT before 1.4.5 contains an out-of-bounds read vulnerability in the
  opposedVertexInd() function when constraint edge intersections are computed in
  floating point and round outside adjacent triangles. Attackers can supply
  nearly-degenera…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-125
vendor: artem-ogre
product: CDT
affected:
  - CDT < 1.4.5
published: '2026-09-05'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T17:17:47.000'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-15647'
references:
  - url: 'https://github.com/artem-ogre/CDT'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/artem-ogre/CDT/blob/1.4.4/CDT/include/CDTUtils.hpp#L175'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/artem-ogre/CDT/commit/bf0d11ebfe3da0da72aed91816f665aef1b447cc
    label: disclosure@vulncheck.com
  - url: 'https://github.com/artem-ogre/CDT/issues/212'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/artem-ogre/CDT/releases/tag/1.4.5'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/cdt-before-1.4.5-out-of-bounds-read-via-opposedvertexind
    label: disclosure@vulncheck.com
  - url: 'https://github.com/artem-ogre/CDT/issues/212'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00284
epssPercentile: 0.1867
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T13:14:26.820448Z'
ingestedAt: '2026-09-06T07:51:56.782Z'
---

## Overview

CDT before 1.4.5 contains an out-of-bounds read vulnerability in the opposedVertexInd() function when constraint edge intersections are computed in floating point and round outside adjacent triangles. Attackers can supply nearly-degenerate constraint edges through geometry data to trigger an out-of-bounds array access that crashes the calling process.

## Remediation

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