TI-2020-17354 Aliases CVE-2020-28622 GHSA-crmm-xp9j-78m8

Improper array index validation in CGAL Project libcgal

HIGH 79CWE-129Published 2022-04-18 · Updated 2025-04-23

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_edge() eh->incident_sface().

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.02408 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

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
CGAL Project	libcgal	CGAL-5.1.1	—	No fix listed	CNA

libcgal VendorCGAL Project Affected CGAL-5.1.1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:cgal:computational_geometry_algorithms_library:5.1.1:::::::*	5.1.1	Vulnerable	CGAL Project
cpe:2.3:o:debian:debian_linux:10.0:::::::*	10.0	Vulnerable	Debian

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

2026-10-02 Threatist record created from CVE-2020-28622
2026-10-03 Alias added: GHSA-crmm-xp9j-78m8

References

Exploit 1

https://talosintelligence.com/vulnerability_reports/TALOS-2020-1225

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