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TI-2020-17359 Aliases CVE-2020-28627GHSA-4c4r-grrc-p4fv

Improper array index validation in CGAL Project libcgal

Priority MEDIUM 43CWE-129Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-129 and the CVSS impact.

Summary

Multiple code execution vulnerabilities exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1. A specially crafted malformed file can lead to an out-of-bounds read and type confusion, which could lead to code execution. An attacker can provide malicious input to trigger any of these vulnerabilities. An oob read vulnerability exists in Nef_S2/SNC_io_parser.h SNC_io_parser<EW>::read_volume() ch->shell_entry_objects().

Why it matters now

EPSS 0.02423 84th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
CGAL ProjectlibcgalCGAL-5.1.1—No fix listedCNA
  • libcgal VendorCGAL Project Affected CGAL-5.1.1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cgal:computational_geometry_algorithms_library:5.1.1:*:*:*:*:*:*:*5.1.1VulnerableCGAL Project
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:cgal:computational_geometry_algorithms_library:5.1.1:*:*:*:*:*:*:* Versions 5.1.1 Vulnerable ·CGAL Project
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-28627
  2. 2026-10-03 Alias added: GHSA-4c4r-grrc-p4fv

References

Exploit 1

Advisory 2

  • TI-2020-18127 Improper array index validation in CGAL Project CVSS 3.1CRITICAL 9.8
  • TI-2020-18126 Improper array index validation in CGAL Project CVSS 3.1HIGH 8.8
  • TI-2020-18125 Improper array index validation in CGAL Project CVSS 3.1HIGH 8.8
  • TI-2020-18124 Improper array index validation in CGAL Project CVSS 3.1HIGH 8.8
  • TI-2020-18123 Improper array index validation in CGAL Project libcgal CVSS 3.1HIGH 8.8
  • TI-2020-18122 Improper array index validation in CGAL Project libcgal CVSS 3.1HIGH 8.8
See all 44 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences