What’s Vulnerable › Vulnerabilities

CVE-2025-15647: CDT before 1.4.5 Out-of-Bounds Read via opposedVertexInd

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-05 · updated 2026-10-19
• Weakness: CWE-125

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: before 1.4.5 — fixed in 1.4.5

How to fix

Upgrade to a fixed version: artem-ogre CDT 1.4.5. Check the vendor advisory for mitigations.

References

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

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