# CVE-2025-15647

## Summary

- **CVE ID:** CVE-2025-15647
- **Severity:** MEDIUM
- **CVSS Score:** 6.8 (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-125
- **Published:** Sep 5, 2026
- **Last Modified:** Sep 8, 2026

## Description

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.

## Affected Products

- artem-ogre — CDT (0)

## References

- [CNA](https://github.com/artem-ogre/CDT/issues/212)
- [CNA](https://github.com/artem-ogre/CDT/commit/bf0d11ebfe3da0da72aed91816f665aef1b447cc)
- [CNA](https://github.com/artem-ogre/CDT/blob/1.4.4/CDT/include/CDTUtils.hpp#L175)
- [CNA](https://github.com/artem-ogre/CDT/releases/tag/1.4.5)
- [CNA](https://github.com/artem-ogre/CDT)
- [CNA](https://www.vulncheck.com/advisories/cdt-before-1.4.5-out-of-bounds-read-via-opposedvertexind)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.12%
- **EPSS Percentile:** 2.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._